Stabilizer mixtures

ABSTRACT

A stabilizer mixture containing the components (A) and (B) wherein 
     component (A) is for example
 
a compound of the formula (A-1)
 
     
       
         
         
             
             
         
       
     
     wherein
 
A 1  is hydrogen or C 1 -C 4 alkyl,
 
A 2  is a direct bond or C 1 -C 10 alkylene, and
 
n 1  is a number from 2 to 50; and
 
component (B) is formed by two different low molecular weight sterically hindered amine compounds containing a group of the formula (I) or (II);
 
     
       
         
         
             
             
         
       
     
     with the proviso that components (A) and (B) are different.

This application is a continuation of copending application Ser. No. 11/498,351, filed Aug. 3, 2006 which is a continuation of copending application Ser. No. 11/052,714, filed Jan. 19. 2005, which is a continuation of application Ser. No. 10/276,120, filed Nov. 11, 2002, now abandoned, which is the National Stage of International Application PCT/EP01/05865, filed May 22, 2001, the contents of which are herein incorporated by reference.

The present invention relates to a stabilizer mixture containing a specific sterically hindered amine ester or amide, and two different low molecular weight sterically hindered amines.

Stabilizer mixtures containing blends of sterically hindered amines are for example described in U.S. Pat. No. 4,692,468, U.S. Pat. No. 4,863,981, U.S. Pat. No. 5,719,217, U.S. Pat. No. 5,919,399, U.S. Pat. No. 5,965,643, U.S. Pat. No. 5,980,783, U.S. Pat. No. 6,015,849 and U.S. Pat. No. 6,020,406.

The present invention relates to a stabilizer mixture containing the components (A) and (B) wherein

component (A) is a compound of the formula (A-1)

wherein A₁ is hydrogen or C₁-C₄alkyl, A₂ is a direct bond or C₁-C₁₀alkylene, and n₁ is a number from 2 to 50; at least one compound of the formulae (A-2-a) and (A-2-b)

wherein n₂ and n₂* are a number from 2 to 50; a compound of the formula (A-3)

wherein A₃ and A₄ independently of one another are hydrogen or C₁-C₈alkyl, or A₃ and A₄ together form a C₂-C₁₄alkylene group, and the variables n₃ independently of one another are a number from 1 to 50; or a compound of the formula (A-4)

wherein n₄ is a number from 2 to 50, A₅ is hydrogen or C₁-C₄alkyl, the radicals A₆ and A₇ independently of one another are C₁-C₄alkyl or a group of the formula (a-I)

wherein A₈ is hydrogen, C₁-C₈alkyl, O., —OH, —CH₂CN, C₁-C₁₈alkoxy, C₅-C₁₂cycloalkoxy, C₃-C₆alkenyl, C₇-C₉phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C₁-C₄alkyl; or C₁-C₈acyl, with the proviso that at least 50% of the radicals A₇ are a group of the formula (a-I); and component (B) is formed by two different low molecular weight sterically hindered amine compounds containing a group of the formula (I) or (II);

with the proviso that components (A) and (B) are different.

Preferably the compounds of component (B) have a molecular weight up to 1,000 g/mol, for example 155 to 800 g/mol or 155 to 1,000 g/mol or 300 to 800 g/mol or 300 to 1,000 g/mol. The two different compounds of component (B) are preferably selected from the group consisting of the following classes

β-1) A Compound of the Formula (B-1)

in which E₁ is hydrogen, C₁-C₈alkyl, O., —OH, —CH₂CN, C₁-C₁₈alkoxy, C₅-C₁₂cycloalkoxy, C₃-C₆alkenyl, C₇-C₉phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C₁-C₄alkyl; or C₁-C₈acyl, m₁ is 1, 2 or 4, if m₁ is 1, E₂ is C₁-C₂₅alkyl, if m₁ is 2, E₂ is C₁-C₁₄alkylene or a group of the formula (b-I)

wherein E₃ is C₁-C₁₀alkyl or C₂-C₁₀alkenyl, E₄ is C₁-C₁₀alkylene, and E₅ and E₆ independently of one another are C₁-C₄alkyl, cyclohexyl or methylcyclohexyl, and if m₁ is 4, E₂ is C₄-C₁₀alkanetetrayl;

β-2) A Compound of the Formula (B-2)

in which two of the radicals E₇ are —COO—(C₁-C₂₀alkyl), and two of the radicals E₇ are a group of the formula (b-II)

with E₈ having one of the meanings of E₁;

β-3) A Compound of the Formula (B-3)

in which E₉ and E₁₀ together form C₂-C₁₄alkylene, E₁₁ is hydrogen or a group -Z₁-COO-Z₂, Z₁ is C₂-C₁₄alkylene, and Z₂ is C₁-C₂₄alkyl, and E₁₂ has one of the meanings of E₁;

β-4) A Compound of the Formula (B-4)

wherein the radicals E₁₃ independently of one another have one of the meanings of E₁, the radicals E₁₄ independently of one another are hydrogen or C₁-C₁₂alkyl, and E₁₅ is C₁-C₁₀alkylene or C₃-C₁₀alkylidene;

β-5) A Compound of the Formula (B-5)

wherein the radicals E₁₆ independently of one another have one of the meanings of E₁;

β-6) A Compound of the Formula (B-6)

in which E₁₇ is C₁-C₂₄alkyl, and E₁₈ has one of the meanings of E₁;

β-7) A Compound of the Formula (B-7)

in which E₁₉, E₂₀ and E₂₁ independently of one another are a group of the formula (b-III)

wherein E₂₂ has one of the meanings of E₁;

β-8) A Compound of the Formula (B-8)

wherein the radicals E₂₃ independently of one another have one of the meanings of E₁, and E₂₄ is hydrogen, C₁-C₁₂alkyl or C₁-C₁₂alkoxy;

β-9) A Compound of the Formula (B-9)

wherein m₂ is 1, 2 or 3, E₂₅ has one of the meanings of E₁, and when m₂ is 1, E₂₆ is a group

when m₂ is 2, E₂₆ is C₂-C₂₂alkylene, and when m₂ is 3, E₂₆ is a group of the formula (b-IV)

wherein the radicals E₂₇ independently of one another are C₂-C₁₂alkylene, and the radicals E₂₈ independently of one another are C₁-C₁₂alkyl or C₅-C₁₂cycloalkyl;

β-10) A Compound of the Formula (B-10)

wherein the radicals E₂₉ independently of one another have one of the meanings of E₁, and E₃₀ is C₂-C₂₂alkylene, C₅-C₇cycloalkylene, C₁-C₄alkylenedi(C₅-C₇cycloalkylene), phenylene or phenylenedi(C₁-C₄alkylene); or

β-11) A Compound of the Formula (B-11)

in which E₃₁ is C₁-C₁₀alkyl, C₅-C₁₂cycloalkyl, C₁-C₄alkyl-substituted C₅-C₁₂cycloalkyl, phenyl or C₁-C₁₀alkyl-substituted phenyl, E₃₂ is C₃-C₁₀alkylene, E₃₃ has one of the meanings of E₁, and m₃ is a number from 2 to 6.

One of the preferred embodiments of this invention relates to stabilizer mixtures wherein the two compounds of component (B) are selected from different classes.

Examples of component (B) are:

-   -   A compound selected from the class β-1 and a compound selected         from the class β-3, β-4, β-5, β-6, β-7, β-8, β-9, β-10 or β-11,         preferably the class β-3, β-5, β-6, β-10 or β-11.     -   A compound selected from the class β-3 and a compound selected         from the class β-4, β-5, β-6, β-7, β-9, β-10 or β-11, preferably         β-5, β-6, β-10 or β-11.     -   A compound selected from the class β-5 and a compound selected         from the class β-6, β-7, β-8, β-9, β-10 or β-11, preferably β-6,         β-10 or β-11.     -   A compound selected from the class β-6 and a compound selected         from the class β-10 or β-11.     -   A compound selected from the class β-7 and a compound selected         from the class β-8, β-10 or β-11.     -   A compound selected from the class β-9 and a compound selected         from the class β-10 or β-11.     -   A compound selected from the class β-10 and a compound selected         from the class β-11.

Examples of alkyl having up to 25 carbon atoms are methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, 2-ethylbutyl, n-pentyl, isopentyl, 1-methylpentyl, 1,3-dimethyl-butyl, n-hexyl, 1-methylhexyl, n-heptyl, isoheptyl, 1,1,3,3-tetramethylbutyl, 1-methylheptyl, 3-methylheptyl, n-octyl, 2-ethylhexyl, 1,1,3-trimethylhexyl, 1,1,3,3-tetramethylpentyl, nonyl, decyl, undecyl, 1-methylundecyl, dodecyl, 1,1,3,3,5,5-hexamethylhexyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, eicosyl and docosyl. One of the preferred definitions of A₈, E₁, E₈, E₁₂, E₁₃, E₁₆, E₁₈, E₂₂, E₂₃, E₂₅, E₂₉ and E₃₃ is C₁-C₄alkyl, especially methyl.

Examples of alkoxy having up to 18 carbon atoms are methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, pentoxy, isopentoxy, hexoxy, heptoxy, octoxy, decyloxy, dodecyloxy, tetradecyloxy, hexadecyloxy and octadecyloxy. One of the preferred meanings of E₁ is octoxy. E₂₄ is preferably C₁-C₄alkoxy.

Examples of C₅-C₁₂cycloalkyl are cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl and cyclododecyl. C₅-C₈Cycloalkyl, especially cyclohexyl, is preferred.

C₁-C₄Alkyl-substituted C₅-C₁₂cycloalkyl is for example methylcyclohexyl or dimethylcyclohexyl.

Examples of C₅-C₁₂cycloalkoxy are cyclopentoxy, cyclohexoxy, cycloheptoxy, cyclooctoxy, cyclodecyloxy and cyclododecyloxy. C₅-C₈Cycloalkoxy, in particular cyclopentoxy and cyclohexoxy, is preferred.

C₁-C₁₀Alkyl-substituted phenyl is for example methylphenyl, dimethylphenyl, trimethylphenyl or tert-butylphenyl.

Examples of C₇-C₉phenylalkyl are benzyl and phenylethyl.

C₇-C₉-Phenylalkyl which is substituted on the phenyl radical by 1, 2 or 3 C₁-C₄alkyl is for example methylbenzyl, dimethylbenzyl, trimethylbenzyl or tert-butylbenzyl.

Examples of alkenyl having up to 10 carbon atoms are allyl, 2-methallyl, butenyl, pentenyl and hexenyl. Allyl is preferred. The carbon atom in position 1 is preferably saturated.

Examples of acyl containing not more than 8 carbon atoms are formyl, acetyl, propionyl, butyryl, pentanoyl, hexanoyl, heptanoyl, octanoyl, acryloyl, methacryloyl and benzoyl. C₁-C₈Alkanoyl, C₃-C₈alkenyl and benzoyl are preferred. Acetyl and acryloyl are especially preferred.

Examples of alkylene having up to 22 carbon atoms are methylene, ethylene, propylene, trimethylene, tetramethylene, pentamethylene, 2,2-dimethyltrimethylene, hexamethylene, trimethylhexamethylene, octamethylene and decamethylene.

An example of C₃-C₁₀alkylidene is the group

An example of C₄-C₁₀alkanetetrayl is 1,2,3,4-butanetetrayl.

An example of C₅-C₇cycloalkylene is cyclohexylene.

An example of C₁-C₄alkylenedi(C₅-C₇cycloalkylene) is methylenedicyclohexylene.

An example of phenylenedi(C₁-C₄alkylene) is methylene-phenylene-methylene or ethylene-phenylene-ethylene.

n₁, n₂, n₂* and n₄ are preferably a number from 2 to 25, in particular 2 to 20.

n₃ is preferably a number from 1 to 25, in particular 1 to 20.

m₃ is preferably a number from 2 to 6 or 2 to 5, in particular 2 to 4.

The compounds described above as components (A) and (B) are essentially known and commercially available. All of them can be prepared by known processes.

The preparation of the compounds of component (A) is disclosed for example in U.S. Pat. No. 4,233,412, U.S. Pat. No. 4,340,534, WO-A-98/51,690 and EP-A-1,803.

The preparation of the compounds of component (B) is disclosed for example in U.S. Pat. No. 5,679,733, U.S. Pat. No. 3,640,928, U.S. Pat. No. 4,198,334, U.S. Pat. No. 5,204,473, U.S. Pat. No. 4,619,958, U.S. Pat. No. 4,110,306, U.S. Pat. No. 4,110,334, U.S. Pat. No. 4,689,416, U.S. Pat. No. 4,408,051, SU-A-768,175 (Derwent 88-138,751/20), U.S. Pat. No. 5,049,604, U.S. Pat. No. 4,769,457, U.S. Pat. No. 4,356,307, U.S. Pat. No. 4,619,956, U.S. Pat. No. 5,182,390, GB-A-2,269,819, U.S. Pat. No. 4,292,240, U.S. Pat. No. 5,026,849, U.S. Pat. No. 5,071,981, U.S. Pat. No. 4,547,538, U.S. Pat. No. 4,976,889 and U.S. Pat. No. 5,051,458.

Component (A) is preferably TINUVIN 622®, HOSTAVIN N 30® or FERRO AM 806®.

The compounds of component (B) are preferably selected from the group consisting of DASTIB 845®, TINUVIN 770®, TINUVIN 765®, TINUVIN 144®, TINUVIN 123®, ADK STAB LA 52®, ADK STAB LA 57®, ADK STAB LA 62®, ADK STAB LA 67®, HOSTAVIN N 20®, HOSTAVIN N 24®, SANDUVOR3050®, DIACETAM 5 ®, SUMISORB TM 61®, UVINUL 4049®, SANDUVOR PR 31®, GOODRITE UV 3034®, GOODRITE UV 3150®, GOODRITE UV 3159®, GOODRITE 3110×128®, UVINUL 4050H ®, UVASIL 299LM® and UVASIL 2000LM®.

The meanings of the terminal groups which saturate the free valences in the compounds of the formulae (A-1), (A-2-a), (A-2-b), (A-4) and (B-11) depend on the processes used for their preparation. The terminal groups can also be modified after the preparation of the compounds.

If the compounds of the formula (A-1) are prepared, for example, by reacting a compound of the formula

in which A₁ is hydrogen or methyl, with a dicarboxylic acid diester of the formula Y—OOC-A₂-COO—Y, in which Y is, for example, methyl, ethyl or propyl, and A₂ is as defined above, the terminal group bonded to the 2,2,6,6-tetramethyl-4-oxypiperidin-1-yl radical is hydrogen or —CO-A₂-COO—Y, and the terminal group bonded to the diacyl radical is —O—Y or

In the compounds of the formula (A-2-a), the terminal group bonded to the nitrogen can be, for example, hydrogen and the terminal group bonded to the 2-hydroxypropylene radical can be, for example, a

group.

In the compounds of the formula (A-2-b), the terminal group bonded to the dimethylene radical can be, for example, —OH, and the terminal group bonded to the oxygen can be, for example, hydrogen. The terminal groups can also be polyether radicals.

In the compounds of the formula (A-4), the end group bonded to the —CH₂— residue can be, for example, hydrogen and the end group bonded to the —CH(CO₂A₇) residue can be, for example, —CH═CH—COOA₇.

In the compounds of the formula (B-11), the terminal group bonded to the silicon atom can be, for example, (E₃₁)₃Si—O—, and the terminal group bonded to the oxygen can be, for example, —Si(E₃₁)₃.

The compounds of the formula (B-11) can also be in the form of cyclic compounds if m₃ is a number from 3 to 6, i.e. the free valences shown in the structural formula then form a direct bond.

A₈ is preferably hydrogen, C₁-C₄alkyl, C₁-C₁₀alkoxy, cyclohexyloxy, allyl, benzyl or acetyl.

E₁, E₈, E₁₂, E₁₃, E₁₆, E₁₈, E₂₂, E₂₃, E₂₅, E₂₉ and E₃₃ are preferably hydrogen, C₁-C₄alkyl, C₁-C₁₀alkoxy, cyclohexyloxy, allyl, benzyl or acetyl.

A₈, E₁, E₈, E₁₂, E₁₃, E₁₆, E₁₈, E₂₂, E₂₃, E₂₅, E₂₉ and E₃₃ are in particular hydrogen or methyl and E₁ additionally is C₁-C₈alkoxy.

According to a preferred embodiment

A₁ is hydrogen or methyl, A₂ is a direct bond or C₂-C₆alkylene, and n₁ is a number from 2 to 25; n₂ and n₂* are a number from 2 to 25; A₃ and A₄ independently of one another are hydrogen or C₁-C₄alkyl, or A₃ and A₄ together form a C₉-C₁₃alkylene group, and the variables n₃ independently of one another are a number from 1 to 25; n₄ is a number from 2 to 25, A₅ and A₆ independently of one another are C₁-C₄alkyl, and A₇ is C₁-C₄alkyl or a group of the formula (a-I) with the proviso that at least 50% of the radicals A₇ are a group of the formula (a-I).

According to a further preferred embodiment

m₁ is 1, 2 or 4, if m₁ is 1, E₂ is C₁₂-C₂₀alkyl, if m₁ is 2, E₂ is C₂-C₁₀alkylene or a group of the formula (b-I) E₃ is C₁-C₄alkyl, E₄ is C₁-C₆alkylene, and E₅ and E₆ independently of one another are C₁-C₄alkyl, and if m₁ is 4, E₂ is C₄-C₈alkanetetrayl; two of the radicals E₇ are —COO—(C₁₀-C₁₅alkyl), and two of the radicals E₇ are a group of the formula (b-II); E₉ and E₁₀ together form C₉-C₁₃alkylene, E₁₁ is hydrogen or a group -Z₁-COO-Z₂, Z₁ is C₂-C₆alkylene, and Z₂ is C₁₀-C₁₆alkyl; E₁₄ is hydrogen, and E₁₅ is C₂-C₆alkylene or C₃-C₅alkylidene; E₁₇ is C₁₀-C₁₄alkyl; E₂₄ is C₁-C₄alkoxy; m₂ is 1, 2 or 3, when m₂ is 1, E₂₆ is a group

when m₂ is 2, E₂₆ is C₂-C₆alkylene, and when m₂ is 3, E₂₆ is a group of the formula (b-IV) the radicals E₂₇ independently of one another are C₂-C₆alkylene, and the radicals E₂₈ independently of one another are C₁-C₄alkyl or C₅-C₈cycloalkyl; E₃₀ is C₂-C₈alkylene; and E₃₁ is C₁-C₄alkyl, E₃₂ is C₃-C₆alkylene, and m₃ is a number from 2 to 6.

A particularly preferred embodiment of this invention relates to a stabilizer mixture wherein component (A) is a compound of the formula (A-1-a), (A-2-a), (A-2-b), (A-3-a) or (A-4-a);

wherein n₁ is a number from 2 to 20;

wherein n₂ and n₂* are a number from 2 to 20;

wherein the variables n₃ independently of one another are a number from 1 to 20;

wherein n₄ is a number from 2 to 20, and at least 50% of the radicals A₇ are a group of the formula (a-I)

wherein A₈ is hydrogen, C₁-C₈alkyl, O., —OH, —CH₂CN, C₁-C₁₈alkoxy, C₅-C₁₂cycloalkoxy, C₃-C₆alkenyl, C₇-C₉phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C₁-C₄alkyl; or C₁-C₈acyl, and the remaining radicals A₇ are ethyl; and component (B) is formed by two different compounds selected from the group consisting of compounds of the formulae (B-1-a), (B-1-b), (B-1-c), (B-1-d), (B-2-a), (B-3-a), (B-3-b), (B-4-a), (B-4-b), (B-5), (B-6-a), (B-7), (B-8-a), (B-9-a), (B-9-b), (B-9-c), (B-10-a) and (B-11-a);

wherein E₁ is hydrogen, C₁-C₈alkyl, O., —OH, —CH₂CN, C₁-C₁₈alkoxy, C₅-C₁₂cycloalkoxy, C₃-C₆alkenyl, C₇-C₉phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C₁-C₄alkyl; or C₁-C₈acyl;

in which two of the radicals E₇ are —COO—C₁₃H₂₇ and two of the radicals E₇ are

and E₈ has one of the meanings of E₁;

wherein E₁₂ has one of the meanings of E₁;

wherein E₁₃ has one of the meanings of E₁;

wherein E₁₆ has one of the meanings of E₁;

wherein E₁₈ has one of the meanings of E₁;

in which E₁₉, E₂₀ and E₂₁ independently of one another are a group of the formula (b-III)

wherein E₂₂ has one of the meanings of E₁;

wherein E₂₃ has one of the meanings of E₁;

wherein E₂₅ has one of the meanings of E₁;

wherein E₂₉ has one of the meanings of E₁;

wherein m₃ is a number from 2 to 6 and E₃₃ has one of the meanings of E₁.

A particularly preferred embodiment of this invention also relates to a stabilizer mixture wherein one of the two different compounds forming component (B) is a compound of the formula (B-1-b) with E₁ being hydrogen.

Another preferred embodiment of this invention relates to a stabilizer mixture wherein component (A) is a compound of the formula (A-1-a) with n₁ being a number from 2 to 20 or a compound of the formula (A-2-a) or (A-2-b) wherein n₂ and n₂* are a number from 2 to 20; and

one of the two different compounds forming component (B) is a compound of the formula (B-1-b) with E₁ being hydrogen.

A further particularly preferred embodiment of this invention is a stabilizer mixture wherein component (A) is a compound of the formula (A-1-a) with n₁ being a number from 2 to 20 or a compound of the formula (A-2-a) or (A-2-b) wherein n₂ and n₂* are a number from 2 to 20; one of the two different compounds forming component (B) is a compound of the formula (B-1-b) with E₁ being hydrogen; and

the other of the two different compounds forming component (B) is a compound of the formula (B-1-a) with E₁ being hydrogen, (B-1-b) with E₁ being methyl, (B-1-d) with E₁ being hydrogen or methyl, (B-3-a) with E₁₂ being hydrogen, (B-3-b) with E₁₂ being hydrogen, (B-4-b) with E₁₃ being hydrogen, (B-5) with E₁₆ being hydrogen, (B-6-a) with E₁₈ being hydrogen or methyl, (B-8-a) with E₂₃ being methyl, (B-9-c) with E₂₅ being hydrogen or methyl, (B-10-a) with E₂₉ being hydrogen, or (B-11-a) with E₃₃ being hydrogen.

Examples of stabilizer mixtures according to the present invention are the following combinations of commercial products:

-   1. TINUVIN 622®+TINUVIN 770®+TINUVIN 765® -   2. TINUVIN 622®+TINUVIN 770®+TINUVIN 144® -   3. TINUVIN 622®+TINUVIN 770®+TINUVIN 123® -   4. TINUVIN 622®+TINUVIN 770®+compound of the formula (B-3-a) wherein     E₁₂ is hydrogen -   5. TINUVIN 622®+TINUVIN 770®+HOSTAVIN N 24® -   6. TINUVIN 622®+TINUVIN 770®+DIACETAM 5® -   7. TINUVIN 622®+TINUVIN 770®+ADK STAB LA 52® -   8. TINUVIN 622®+TINUVIN 770®+ADK STAB LA 57® -   9. TINUVIN 622®+TINUVIN 770®+ADK STAB LA 62® -   10. TINUVIN 622®+TINUVIN 770®+ADK STAB LA 67® -   11. TINUVIN 622®+TINUVIN 770®+GOODRITE UV 3034® -   12. TINUVIN 622®+TINUVIN 770®+GOODRITE UV 3150® -   13. TINUVIN 622®+TINUVIN 770®+GOODRITE UV 3159® -   14. TINUVIN 622®+TINUVIN 770®+compound of the formula (B-9-a)     wherein E₂₅ is hydrogen -   15. TINUVIN 622®+TINUVIN 770®+UVINUL 4049® -   16. TINUVIN 622®+TINUVIN 770®+compound of the formula (B-10-a)     wherein E₂₉ is hydrogen -   17. TINUVIN 622®+TINUVIN 770®+compound of the formula (B-1-a)     wherein E₁ is hydrogen -   18. TINUVIN 622®+TINUVIN 770®+SUMISORB TM 61® -   19. TINUVIN 622®+TINUVIN 770®+SANDUVOR 3050® -   20. TINUVIN 622®+TINUVIN 770®+SANDUVOR PR-31® -   21. TINUVIN 622®+TINUVIN 770®+UVASIL 299 LM® -   22. TINUVIN 622®+TINUVIN 770®+UVASIL 2000 LM® -   23. TINUVIN 622®+TINUVIN 770®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   24. TINUVIN 622®+TINUVIN 770®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   25. TINUVIN 622®+TINUVIN 770®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   26. TINUVIN 622®+TINUVIN 765®+TINUVIN 144® -   27. TINUVIN 622®+TINUVIN 765®+TINUVIN 123® -   28. TINUVIN 622®+TINUVIN 765®+compound of the formula (B-3-a)     wherein E₁₂ is hydrogen -   29. TINUVIN 622®+TINUVIN 765®+HOSTAVIN N 24® -   30. TINUVIN 622®+TINUVIN 765®+DIACETAM 5® -   31. TINUVIN 622®+TINUVIN 765®+ADK STAB LA 52® -   32. TINUVIN 622®+TINUVIN 765®+ADK STAB LA 57® -   33. TINUVIN 622®+TINUVIN 765®+ADK STAB LA 62® -   34. TINUVIN 622®+TINUVIN 765®+ADK STAB LA 67® -   35. TINUVIN 622®+TINUVIN 765®+GOODRITE UV 3034® -   36. TINUVIN 622®+TINUVIN 765®+GOODRITE UV 3150® -   37. TINUVIN 622®+TINUVIN 765®+GOODRITE UV 3159® -   38. TINUVIN 622®+TINUVIN 765®+compound of the formula (B-9-a)     wherein E₂₅ is hydrogen -   39. TINUVIN 622®+TINUVIN 765®+UVINUL 4049® -   40. TINUVIN 622®+TINUVIN 765®+compound of the formula (B-10-a)     wherein E₂₉ is hydrogen -   41. TINUVIN 622®+TINUVIN 765®+compound of the formula (B-1-a)     wherein E₁ is hydrogen -   42. TINUVIN 622®+TINUVIN 765®+SUMISORB TM 61® -   43. TINUVIN 622®+TINUVIN 765®+SANDUVOR 3050® -   44. TINUVIN 622®+TINUVIN 765®+SANDUVOR PR-31® -   45. TINUVIN 622®+TINUVIN 765®+UVASIL 299 LM® -   46. TINUVIN 622®+TINUVIN 765®+UVASIL 2000 LM® -   47. TINUVIN 622®+TINUVIN 765®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   48. TINUVIN 622®+TINUVIN 765®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   49. TINUVIN 622®+TINUVIN 765®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   50. TINUVIN 622®+TINUVIN 144®+TINUVIN 123® -   51. TINUVIN 622®+TINUVIN 144®+compound of the formula (B-3-a)     wherein E₁₂ is hydrogen -   52. TINUVIN 622®+TINUVIN 144®+HOSTAVIN N 24® -   53. TINUVIN 622®+TINUVIN 144®+DIACETAM 5® -   54. TINUVIN 622®+TINUVIN 144®+ADK STAB LA 52® -   55. TINUVIN 622®+TINUVIN 144®+ADK STAB LA 57® -   56. TINUVIN 622®+TINUVIN 144®+ADK STAB LA 62® -   57. TINUVIN 622®+TINUVIN 144®+ADK STAB LA 67® -   58. TINUVIN 622®+TINUVIN 144®+GOODRITE UV 3034® -   59. TINUVIN 622®+TINUVIN 144®+GOODRITE UV 3150® -   60. TINUVIN 622®+TINUVIN 144®+GOODRITE UV 3159® -   61. TINUVIN 622®+TINUVIN 144®+compound of the formula (B-9-a)     wherein E₂₅ is hydrogen -   62. TINUVIN 622®+TINUVIN 144®+UVINUL 4049® -   63. TINUVIN 622®+TINUVIN 144®+compound of the formula (B-10-a)     wherein E₂₉ is hydrogen -   64. TINUVIN 622®+TINUVIN 144®+compound of the formula (B-1-a)     wherein E₁ is hydrogen -   65. TINUVIN 622®+TINUVIN 144®+SUMISORB TM 61® -   66. TINUVIN 622®+TINUVIN 144®+SANDUVOR 3050® -   67. TINUVIN 622®+TINUVIN 144®+SANDUVOR PR-31® -   68. TINUVIN 622®+TINUVIN 144®+UVASIL 299 LM® -   69. TINUVIN 622®+TINUVIN 144®+UVASIL 2000 LM® -   70. TINUVIN 622®+TINUVIN 144®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   71. TINUVIN 622®+TINUVIN 144®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   72. TINUVIN 622®+TINUVIN 144®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂, being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   73. TINUVIN 622®+TINUVIN 123®+compound of the formula (B-3-a)     wherein E₁₂ is hydrogen -   74. TINUVIN 622®+TINUVIN 123®+HOSTAVIN N 24® -   75. TINUVIN 622®+TINUVIN 123®+DIACETAM 5® -   76. TINUVIN 622®+TINUVIN 123®+ADK STAB LA 52® -   77. TINUVIN 622®+TINUVIN 123®+ADK STAB LA 57® -   78. TINUVIN 622®+TINUVIN 123®+ADK STAB LA 62® -   79. TINUVIN 622®+TINUVIN 123®+ADK STAB LA 67® -   80. TINUVIN 622®+TINUVIN 123®+GOODRITE UV 3034® -   81. TINUVIN 622®+TINUVIN 123®+GOODRITE UV 3150® -   82. TINUVIN 622®+TINUVIN 123®+GOODRITE UV 3159® -   83. TINUVIN 622®+TINUVIN 123®+compound of the formula (B-9-a)     wherein E₂₅ is hydrogen -   84. TINUVIN 622®+TINUVIN 123®+UVINUL 4049® -   85. TINUVIN 622®+TINUVIN 123®+compound of the formula (B-10-a)     wherein E₂₉ is hydrogen -   86. TINUVIN 622®+TINUVIN 123®+compound of the formula (B-1-a)     wherein E₁ is hydrogen -   87. TINUVIN 622®+TINUVIN 123®+SUMISORB TM 61® -   88. TINUVIN 622®+TINUVIN 123®+SANDUVOR 3050® -   89. TINUVIN 622®+TINUVIN 123®+SANDUVOR PR-31® -   90. TINUVIN 622®+TINUVIN 123®+UVASIL 299 LM® -   91. TINUVIN 622®+TINUVIN 123®+UVASIL 2000 LM® -   92. TINUVIN 622®+TINUVIN 123®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   93. TINUVIN 622®+TINUVIN 123®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   94. TINUVIN 622®+TINUVIN 123®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   95. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+HOSTAVIN N 24® -   96. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+DIACETAM 5® -   97. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+ADK STAB LA 52® -   98. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+ADK STAB LA 57® -   99. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+ADK STAB LA 62® -   100. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+ADK STAB LA 67® -   101. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+GOODRITE UV 3034® -   102. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+GOODRITE UV 3150® -   103. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+GOODRITE UV 3159® -   104. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+compound of the formula (B-9-a) wherein E₂₅ is hydrogen -   105. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+UVINUL 4049® -   106. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+compound of the formula (B-10-a) wherein E₂₉ is hydrogen -   107. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+compound of the formula (B-1-a) wherein E₁ is hydrogen -   108. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+SUMISORB TM 61® -   109. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+SANDUVOR 3050® -   110. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+SANDUVOR PR-31® -   111. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+UVASIL 299 LM® -   112. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+UVASIL 2000 LM® -   113. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+compound of the formula (B-6-a) wherein E₁₈ is hydrogen -   114. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+compound of the formula (B-6-a) wherein E₁₈ is methyl -   115. TINUVIN 622®+compound of the formula (B-3-a) wherein E₁₂ is     hydrogen+compound of the formula (B-7) with E₁₉, E₂₀ and E₂₁ being a     group of the formula (b-III) wherein E₂₂ is hydrogen. -   116. TINUVIN 622®+HOSTAVIN N 24®+DIACETAM 5® -   117. TINUVIN 622®+HOSTAVIN N 24®+ADK STAB LA 52® -   118. TINUVIN 622®+HOSTAVIN N 24®+ADK STAB LA 57® -   119. TINUVIN 622®+HOSTAVIN N 24®+ADK STAB LA 62® -   120. TINUVIN 622®+HOSTAVIN N 24®+ADK STAB LA 67® -   121. TINUVIN 622®+HOSTAVIN N 24®+GOODRITE UV 3034® -   122. TINUVIN 622®+HOSTAVIN N 24®+GOODRITE UV 3150® -   123. TINUVIN 622®+HOSTAVIN N 24®+GOODRITE UV 3159® -   124. TINUVIN 622®+HOSTAVIN N 24®+compound of the formula (B-9-a)     wherein E₂₅ is hydrogen -   125. TINUVIN 622®+HOSTAVIN N 24®+UVINUL 4049® -   126. TINUVIN 622®+HOSTAVIN N 24®+compound of the formula (B-10-a)     wherein E₂₉ is hydrogen -   127. TINUVIN 622®+HOSTAVIN N 24®+compound of the formula (B-1-a)     wherein E₁ is hydrogen -   128. TINUVIN 622®+HOSTAVIN N 24®+SUMISORB TM 61® -   129. TINUVIN 622®+HOSTAVIN N 24®+SANDUVOR 3050® -   130. TINUVIN 622®+HOSTAVIN N 24®+SANDUVOR PR-31® -   131. TINUVIN 622®+HOSTAVIN N 24®+UVASIL 299 LM® -   132. TINUVIN 622®+HOSTAVIN N 24®+UVASIL 2000 LM® -   133. TINUVIN 622®+HOSTAVIN N 24®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   134. TINUVIN 622®+HOSTAVIN N 24®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   135. TINUVIN 622®+HOSTAVIN N 24®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   136. TINUVIN 622®+DIACETAM 5®+ADK STAB LA 52® -   137. TINUVIN 622®+DIACETAM 5®+ADK STAB LA 57® -   138. TINUVIN 622®+DIACETAM 5®+ADK STAB LA 62® -   139. TINUVIN 622®+DIACETAM 5®+ADK STAB LA 67® -   140. TINUVIN 622®+DIACETAM 5®+GOODRITE UV 3034® -   141. TINUVIN 622®+DIACETAM 5®+GOODRITE UV 3150® -   142. TINUVIN 622®+DIACETAM 5®+GOODRITE UV 3159® -   143. TINUVIN 622®+DIACETAM 5®+compound of the formula (B-9-a)     wherein E₂₅ is hydrogen -   144. TINUVIN 622®+DIACETAM 5®+UVINUL 4049® -   145. TINUVIN 622®+DIACETAM 5®+compound of the formula (B-10-a)     wherein E₂₉ is hydrogen -   146. TINUVIN 622®+DIACETAM 5®+compound of the formula (B-1-a)     wherein E₁ is hydrogen -   147. TINUVIN 622®+DIACETAM 5®+SUMISORB TM 61® -   148. TINUVIN 622®+DIACETAM 5®+SANDUVOR 3050® -   149. TINUVIN 622®+DIACETAM 5®+SANDUVOR PR-31® -   150. TINUVIN 622®+DIACETAM 5®+UVASIL 299 LM® -   151. TINUVIN 622®+DIACETAM 5®+UVASIL 2000 LM® -   152. TINUVIN 622®+DIACETAM 5®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   153. TINUVIN 622®+DIACETAM 5®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   154. TINUVIN 622®+DIACETAM 5®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   155. TINUVIN 622®+ADK STAB LA 52®+ADK STAB LA 57® -   156. TINUVIN 622®+ADK STAB LA 52®+ADK STAB LA 62® -   157. TINUVIN 622®+ADK STAB LA 52®+ADK STAB LA 67® -   158. TINUVIN 622®+ADK STAB LA 52®+GOODRITE UV 3034® -   159. TINUVIN 622®+ADK STAB LA 52®+GOODRITE UV 3150® -   160. TINUVIN 622®+ADK STAB LA 52®+GOODRITE UV 3159® -   161. TINUVIN 622®+ADK STAB LA 52®+compound of the formula (B-9-a)     wherein E₂₅ is hydrogen -   162. TINUVIN 622®+ADK STAB LA 52®+UVINUL 4049® -   163. TINUVIN 622®+ADK STAB LA 52®+compound of the formula (B-10-a)     wherein E₂₉ is hydrogen -   164. TINUVIN 622®+ADK STAB LA 52®+compound of the formula (B-1-a)     wherein E₁ is hydrogen -   165. TINUVIN 622®+ADK STAB LA 52®+SUMISORB TM 61® -   166. TINUVIN 622®+ADK STAB LA 52®+SANDUVOR 3050® -   167. TINUVIN 622®+ADK STAB LA 52®+SANDUVOR PR-31® -   168. TINUVIN 622®+ADK STAB LA 52®+UVASIL 299 LM® -   169. TINUVIN 622®+ADK STAB LA 52®+UVASIL 2000 LM® -   170. TINUVIN 622®+ADK STAB LA 52®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   171. TINUVIN 622®+ADK STAB LA 52®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   172. TINUVIN 622®+ADK STAB LA 52®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   173. TINUVIN 622®+ADK STAB LA 57®+ADK STAB LA 62® -   174. TINUVIN 622®+ADK STAB LA 57®+ADK STAB LA 67® -   175. TINUVIN 622®+ADK STAB LA 57®+GOODRITE UV 3034® -   176. TINUVIN 622®+ADK STAB LA 57®+GOODRITE UV 3150® -   177. TINUVIN 622®+ADK STAB LA 57®+GOODRITE UV 3159® -   178. TINUVIN 622®+ADK STAB LA 57®+compound of the formula (B-9-a)     wherein E₂₅ is hydrogen -   179. TINUVIN 622®+ADK STAB LA 57®+UVINUL 4049® -   180. TINUVIN 622®+ADK STAB LA 57®+compound of the formula (B-10-a)     wherein E₂₉ is hydrogen -   181. TINUVIN 622®+ADK STAB LA 57®+compound of the formula (B-1-a)     wherein E₁ is hydrogen -   182. TINUVIN 622®+ADK STAB LA 57®+SUMISORB TM 61® -   183. TINUVIN 622®+ADK STAB LA 57®+SANDUVOR 3050® -   184. TINUVIN 622®+ADK STAB LA 57®+SANDUVOR PR-31® -   185. TINUVIN 622®+ADK STAB LA 57®+UVASIL 299 LM® -   186. TINUVIN 622®+ADK STAB LA 57®+UVASIL 2000 LM® -   187. TINUVIN 622®+ADK STAB LA 57®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   188. TINUVIN 622®+ADK STAB LA 57®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   189. TINUVIN 622®+ADK STAB LA 57®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   190. TINUVIN 622®+ADK STAB LA 62®+ADK STAB LA 67® -   191. TINUVIN 622®+ADK STAB LA 62®+GOODRITE UV 3034® -   192. TINUVIN 622®+ADK STAB LA 62®+GOODRITE UV 3150® -   193. TINUVIN 622®+ADK STAB LA 62®+GOODRITE UV 3159® -   194. TINUVIN 622®+ADK STAB LA 62®+compound of the formula (B-9-a)     wherein E₂₅ is hydrogen -   195. TINUVIN 622®+ADK STAB LA 62®+UVINUL 4049® -   196. TINUVIN 622®+ADK STAB LA 62®+compound of the formula (B-10-a)     wherein E₂₉ is hydrogen -   197. TINUVIN 622®+ADK STAB LA 62®+compound of the formula (B-1-a)     wherein E₁ is hydrogen -   198. TINUVIN 622®+ADK STAB LA 62®+SUMISORB TM 61® -   199. TINUVIN 622®+ADK STAB LA 62®+SANDUVOR 3050® -   200. TINUVIN 622®+ADK STAB LA 62®+SANDUVOR PR-31® -   201. TINUVIN 622®+ADK STAB LA 62®+UVASIL 299 LM® -   202. TINUVIN 622®+ADK STAB LA 62®+UVASIL 2000 LM® -   203. TINUVIN 622®+ADK STAB LA 62®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   204. TINUVIN 622®+ADK STAB LA 62®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   205. TINUVIN 622®+ADK STAB LA 62®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   206. TINUVIN 622®+ADK STAB LA 67®+GOODRITE UV 3034® -   207. TINUVIN 622®+ADK STAB LA 67®+GOODRITE UV 3150® -   208. TINUVIN 622®+ADK STAB LA 67®+GOODRITE UV 3159® -   209. TINUVIN 622®+ADK STAB LA 67®+compound of the formula (B-9-a)     wherein E₂₅ is hydrogen -   210. TINUVIN 622®+ADK STAB LA 67®+UVINUL 4049® -   211. TINUVIN 622®+ADK STAB LA 67®+compound of the formula (B-10-a)     wherein E₂₉ is hydrogen -   212. TINUVIN 622®+ADK STAB LA 67®+compound of the formula (B-1-a)     wherein E₁ is hydrogen -   213. TINUVIN 622®+ADK STAB LA 67®+SUMISORB TM 61® -   214. TINUVIN 622®+ADK STAB LA 67®+SANDUVOR 3050® -   215. TINUVIN 622®+ADK STAB LA 67®+SANDUVOR PR-31® -   216. TINUVIN 622®+ADK STAB LA 67®+UVASIL 299 LM® -   217. TINUVIN 622®+ADK STAB LA 67®+UVASIL 2000 LM® -   218. TINUVIN 622®+ADK STAB LA 67®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   219. TINUVIN 622®+ADK STAB LA 67®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   220. TINUVIN 622®+ADK STAB LA 67®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   221. TINUVIN 622®+GOODRITE UV 3034®+GOODRITE UV 3150® -   222. TINUVIN 622®+GOODRITE UV 3034®+GOODRITE UV 3159® -   223. TINUVIN 622®+GOODRITE UV 3034®+compound of the formula (B-9-a)     wherein E₂₅ is hydrogen -   224. TINUVIN 622®+GOODRITE UV 3034®+UVINUL 4049® -   225. TINUVIN 622®+GOODRITE UV 3034®+compound of the formula (B-10-a)     wherein E₂₉ is hydrogen -   226. TINUVIN 622®+GOODRITE UV 3034®+compound of the formula (B-1-a)     wherein E₁ is hydrogen -   227. TINUVIN 622®+GOODRITE UV 3034®+SUMISORB TM 61® -   228. TINUVIN 622®+GOODRITE UV 3034®+SANDUVOR 3050® -   229. TINUVIN 622®+GOODRITE UV 3034®+SANDUVOR PR-31® -   230. TINUVIN 622®+GOODRITE UV 3034®+UVASIL 299 LM® -   231. TINUVIN 622®+GOODRITE UV 3034®+UVASIL 2000 LM® -   232. TINUVIN 622®+GOODRITE UV 3034®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   233. TINUVIN 622®+GOODRITE UV 3034®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   234. TINUVIN 622®+GOODRITE UV 3034®+compound of the formula (B-7)     with E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein     E₂₂ is hydrogen. -   235. TINUVIN 622®+GOODRITE UV 3150®+GOODRITE UV 3159® -   236. TINUVIN 622®+GOODRITE UV 3150®+compound of the formula (B-9-a)     wherein E₂₅ is hydrogen -   237. TINUVIN 622®+GOODRITE UV 3150®+UVINUL 4049® -   238. TINUVIN 622®+GOODRITE UV 3150®+compound of the formula (B-10-a)     wherein E₂₉ is hydrogen -   239. TINUVIN 622®+GOODRITE UV 3150®+compound of the formula (B-1-a)     wherein E₁ is hydrogen -   240. TINUVIN 622®+GOODRITE UV 3150®+SUMISORB TM 61® -   241. TINUVIN 622®+GOODRITE UV 3150®+SANDUVOR 3050® -   242. TINUVIN 622®+GOODRITE UV 3150®+SANDUVOR PR-31® -   243. TINUVIN 622®+GOODRITE UV 3150®+UVASIL 299 LM® -   244. TINUVIN 622®+GOODRITE UV 3150®+UVASIL 2000 LM® -   245. TINUVIN 622®+GOODRITE UV 3150®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   246. TINUVIN 622®+GOODRITE UV 3150®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   247. TINUVIN 622®+GOODRITE UV 3150®+compound of the formula (B-7)     with E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein     E₂₂ is hydrogen. -   248. TINUVIN 622®+GOODRITE UV 3159®+compound of the formula (B-9-a)     wherein E₂₅ is hydrogen -   249. TINUVIN 622®+GOODRITE UV 3159®+UVINUL 4049® -   250. TINUVIN 622®+GOODRITE UV 3159®+compound of the formula (B-10-a)     wherein E₂₉ is hydrogen -   251. TINUVIN 622®+GOODRITE UV 3159®+compound of the formula (B-1-a)     wherein E₁ is hydrogen -   252. TINUVIN 622®+GOODRITE UV 3159®+SUMISORB TM 61® -   253. TINUVIN 622®+GOODRITE UV 3159®+SANDUVOR 3050® -   254. TINUVIN 622®+GOODRITE UV 3159®+SANDUVOR PR-31® -   255. TINUVIN 622®+GOODRITE UV 3159®+UVASIL 299 LM® -   256. TINUVIN 622®+GOODRITE UV 3159®+UVASIL 2000 LM® -   257. TINUVIN 622®+GOODRITE UV 3159®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   258. TINUVIN 622®+GOODRITE UV 3159®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   259. TINUVIN 622®+GOODRITE UV 3159®+compound of the formula (B-7)     with E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein     E₂₂ is hydrogen. -   260. TINUVIN 622®+compound of the formula (B-9-a) wherein E₂₅ is     hydrogen+UVINUL 4049® -   261. TINUVIN 622®+compound of the formula (B-9-a) wherein E₂₅ is     hydrogen+compound of the formula (B-10-a) wherein E₂₉ is hydrogen -   262. TINUVIN 622®+compound of the formula (B-9-a) wherein E₂₅ is     hydrogen+compound of the formula (B-1-a) wherein E₁ is hydrogen -   263. TINUVIN 622®+compound of the formula (B-9-a) wherein E₂₅ is     hydrogen+SUMISORB TM 61® -   264. TINUVIN 622®+compound of the formula (B-9-a) wherein E₂₅ is     hydrogen+SANDUVOR 3050® -   265. TINUVIN 622®+compound of the formula (B-9-a) wherein E₂₅ is     hydrogen+SANDUVOR PR-31® -   266. TINUVIN 622®+compound of the formula (B-9-a) wherein E₂₅ is     hydrogen+UVASIL 299 LM® -   267. TINUVIN 622®+compound of the formula (B-9-a) wherein E₂₅ is     hydrogen+UVASIL 2000 LM® -   268. TINUVIN 622®+compound of the formula (B-9-a) wherein E₂₅ is     hydrogen+compound of the formula (B-6-a) wherein E₁₈ is hydrogen -   269. TINUVIN 622®+compound of the formula (B-9-a) wherein E₂₅ is     hydrogen+compound of the formula (B-6-a) wherein E₁₈ is methyl -   270. TINUVIN 622®+compound of the formula (B-9-a) wherein E₂₅ is     hydrogen+compound of the formula (B-7) with E₁₉, E₂₀ and E₂₁ being a     group of the formula (b-III) wherein E₂₂ is hydrogen. -   271. TINUVIN 622®+UVINUL 4049®+compound of the formula (B-10-a)     wherein E₂₉ is hydrogen -   272. TINUVIN 622®+UVINUL 4049®+compound of the formula (B-1-a)     wherein E₁ is hydrogen -   273. TINUVIN 622®+UVINUL 4049®+SUMISORB TM 61® -   274. TINUVIN 622®+UVINUL 4049®+SANDUVOR 3050® -   275. TINUVIN 622®+UVINUL 4049®+SANDUVOR PR-31® -   276. TINUVIN 622®+UVINUL 4049®+UVASIL 299 LM® -   277. TINUVIN 622®+UVINUL 4049®+UVASIL 2000 LM® -   278. TINUVIN 622®+UVINUL 4049®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   279. TINUVIN 622®+UVINUL 4049®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   280. TINUVIN 622®+UVINUL 4049®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   281. TINUVIN 622®+compound of the formula (B-10-a) wherein E₂₉ is     hydrogen+compound of the formula (B-1-a) wherein E₁ is hydrogen -   282. TINUVIN 622®+compound of the formula (B-10-a) wherein E₂₉ is     hydrogen+SUMISORB TM 61® -   283. TINUVIN 622®+compound of the formula (B-10-a) wherein E₂₉ is     hydrogen+SANDUVOR 3050® -   284. TINUVIN 622®+compound of the formula (B-10-a) wherein E₂₉ is     hydrogen+SANDUVOR PR-31® -   285. TINUVIN 622®+compound of the formula (B-10-a) wherein E₂₉ is     hydrogen+UVASIL 299 LM® -   286. TINUVIN 622®+compound of the formula (B-10-a) wherein E₂₉ is     hydrogen+UVASIL 2000 LM® -   287. TINUVIN 622®+compound of the formula (B-10-a) wherein E₂₉ is     hydrogen+compound of the formula (B-6-a) wherein E₁₈ is hydrogen -   288. TINUVIN 622®+compound of the formula (B-10-a) wherein E₂₉ is     hydrogen+compound of the formula (B-6-a) wherein E₁₈ is methyl -   289. TINUVIN 622®+compound of the formula (B-10-a) wherein E₂₉ is     hydrogen+compound of the formula (B-7) with E₁₉, E₂₀ and E₂₁ being a     group of the formula (b-III) wherein E₂₂ is hydrogen. -   290. TINUVIN 622®+compound of the formula (B-1-a) wherein E₁ is     hydrogen+SUMISORB TM 61® -   291. TINUVIN 622®+compound of the formula (B-1-a) wherein E₁ is     hydrogen+SANDUVOR 3050® -   292. TINUVIN 622®+compound of the formula (B-1-a) wherein E₁ is     hydrogen+SANDUVOR PR-31® -   293. TINUVIN 622®+compound of the formula (B-1-a) wherein E₁ is     hydrogen+UVASIL 299 LM® -   294. TINUVIN 622®+compound of the formula (B-1-a) wherein E₁ is     hydrogen+UVASIL 2000 LM® -   295. TINUVIN 622®+compound of the formula (B-1-a) wherein E₁ is     hydrogen+compound of the formula (B-6-a) wherein E₁₈ is hydrogen -   296. TINUVIN 622®+compound of the formula (B-1-a) wherein E₁ is     hydrogen+compound of the formula (B-6-a) wherein E₁₈ is methyl -   297. TINUVIN 622®+compound of the formula (B-1-a) wherein E₁ is     hydrogen+compound of the formula (B-7) with E₁₉, E₂₀ and E₂₁ being a     group of the formula (b-III) wherein E₂₂ is hydrogen. -   298. TINUVIN 622®+SUMISORB TM 61®+SANDUVOR 3050® -   299. TINUVIN 622®+SUMISORB TM 61®+SANDUVOR PR-31® -   300. TINUVIN 622®+SUMISORB TM 61®+UVASIL 299 LM® -   301. TINUVIN 622®+SUMISORB TM 61®+UVASIL 2000 LM® -   302. TINUVIN 622®+SUMISORB TM 61®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   303. TINUVIN 622®+SUMISORB TM 61®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   304. TINUVIN 622®+SUMISORB TM 61®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   305. TINUVIN 622®+SANDUVOR 3050®+SANDUVOR PR-31® -   306. TINUVIN 622®+SANDUVOR 3050®+UVASIL 299 LM® -   307. TINUVIN 622®+SANDUVOR 3050®+UVASIL 2000 LM® -   308. TINUVIN 622®+SANDUVOR 3050®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   309. TINUVIN 622®+SANDUVOR 3050®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   310. TINUVIN 622®+SANDUVOR 3050®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   311. TINUVIN 622®+SANDUVOR PR-31®+UVASIL 299 LM® -   312. TINUVIN 622®+SANDUVOR PR-31®+UVASIL 2000 LM® -   313. TINUVIN 622®+SANDUVOR PR-31®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   314. TINUVIN 622®+SANDUVOR PR-31®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   315. TINUVIN 622®+SANDUVOR PR-31®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   316. TINUVIN 622®+UVASIL 299 LM®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   317. TINUVIN 622®+UVASIL 299 LM®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   318. TINUVIN 622®+UVASIL 299 LM®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   319. TINUVIN 622®+UVASIL 2000 LM®+compound of the formula (B-6-a)     wherein E₁₈ is hydrogen -   320. TINUVIN 622®+UVASIL 2000 LM®+compound of the formula (B-6-a)     wherein E₁₈ is methyl -   321. TINUVIN 622®+UVASIL 2000 LM®+compound of the formula (B-7) with     E₁₉, E₂₀ and E₂₁ being a group of the formula (b-III) wherein E₂₂ is     hydrogen. -   322. TINUVIN 622®+compound of the formula (B-6-a) wherein E₁₈ is     hydrogen+compound of the formula (B-6-a) wherein E₁₈ is methyl -   323. TINUVIN 622®+compound of the formula (B-6-a) wherein E₁₈ is     hydrogen+compound of the formula (B-7) with E₁₉, E₂₀ and E₂₁ being a     group of the formula (b-III) wherein E₂₂ is hydrogen. -   324. TINUVIN 622®+compound of the formula (B-6-a) wherein E₁₈ is     methyl+compound of the formula (B-7) with E₁₉, E₂₀ and E₂₁ being a     group of the formula (b-III) wherein E₂₂ is hydrogen.

Further examples of stabilizer mixtures are those wherein in the above combinations 1 to 324 the commercial product TINUVIN 622® is replaced by a compound of the formula (A-2-a) and/or (A-2-b)

wherein n₂ and n₂* are a number from 2 to 20.

Additional examples of stabilizer mixtures are those wherein in the above combinations 1 to 324 the commercial product TINUVIN 622® is replaced by a compound of the formula (A-4-a)

wherein n₄ is a number from 2 to 20, and at least 50% of the radicals A₇ are a group of the formula

and the remaining radicals A₇ are ethyl.

Combinations of particular interest are numbers 1, 4, 7, 8, 12, 13 and 15 to 24, and the corresponding combinations wherein TINUVIN 622® is replaced by a compound of the formula (A-2-a) and/or (A-2-b).

Further combinations of particular interest are numbers 3, 4, 8, 17 and 31.

The commercial product TINUVIN 622® corresponds to the compound of the formula (A-1-a).

The commercial product TINUVIN 770® corresponds to the compound of the formula (B-1-b) wherein E₁ is hydrogen.

The commercial product TINUVIN 765® corresponds to the compound of the formula (B-1-b) wherein E₁ is methyl.

The commercial product TINUVIN 123® corresponds to the compound of the formula (B-1-b) wherein E₁ is octyloxy.

The commercial product TINUVIN 144® corresponds to the compound of the formula (B-1-c) wherein E₁ is methyl.

The commercial product ADK STAB LA 57® corresponds to the compound of the formula (B-1-d) wherein E₁ is hydrogen.

The commercial product ADK STAB LA 52® corresponds to the compound of the formula (B-1-d) wherein E₁ is methyl.

The commercial product ADK STAB LA 67® corresponds to the compound of the formula (B-2-a) wherein E₈ is hydrogen.

The commercial product ADK STAB LA 62® corresponds to the compound of the formula (B-2-a) wherein E₁ is methyl.

The commercial product HOSTAVIN N 24® corresponds to the compound of the formula (B-3-b) wherein E₁₂ is hydrogen.

The commercial product SANDUVOR 3050® corresponds to the compound of the formula (B-3-b-1) shown below, wherein E₁₂ is hydrogen.

The commercial product DIACETAM 5® corresponds to the compound of the formula (B-4-a) wherein E₁₃ is hydrogen.

The commercial product SUMISORB TM 61 corresponds to the compound of the formula (B-4-b) wherein E₁₃ is hydrogen.

The commercial product UVINUL 4049® corresponds to the compound of the formula (B-5) wherein E₁₆ is hydrogen.

The commercial product SANDUVOR PR 31® corresponds to the compound of the formula (B-8-a) wherein E₂₃ is methyl.

The commercial product GOODRITE 3034® corresponds to the compound of the formula (B-9-b) wherein E₂₅ is hydrogen.

The commercial product GOODRITE 3150® corresponds to the compound of the formula (B-9-c) wherein E₂₅ is hydrogen.

The commercial product GOODRITE 3159® corresponds to the compound of the formula (B-9-c) wherein E₂₅ is methyl.

The commercial product UVASIL 299 LM® or UVASIL 2000 LM®contains as active ingredient the compound of the formula (B-11-a) wherein R₁₆ is hydrogen.

The compound of the formula (B-3-b-1) has the following structure:

The stabilizer mixture according to this invention is suitable for stabilizing organic materials against degradation induced by light, heat or oxidation. Examples of such organic materials are the following:

1. Polymers of monoolefins and diolefins, for example polypropylene, polyisobutylene, polybut-1-ene, poly-4-methylpent-1-ene, polyisoprene or polybutadiene, as well as polymers of cycloolefins, for instance of cyclopentene or norbornene, polyethylene (which optionally can be crosslinked), for example high density polyethylene (HDPE), high density and high molecular weight polyethylene (HDPE-HMW), high density and ultrahigh molecular weight polyethylene (HDPE-UHMW), medium density polyethylene (MDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), (VLDPE) and (ULDPE).

Polyolefins, i.e. the polymers of monoolefins exemplified in the preceding paragraph, preferably polyethylene and polypropylene, can be prepared by different, and especially by the following, methods:

-   -   a) radical polymerisation (normally under high pressure and at         elevated temperature).     -   b) catalytic polymerisation using a catalyst that normally         contains one or more than one metal of groups IVb, Vb, VIb or         VIII of the Periodic Table. These metals usually have one or         more than one ligand, typically oxides, halides, alcoholates,         esters, ethers, amines, alkyls, alkenyls and/or aryls that may         be either π- or σ-coordinated.

These metal complexes may be in the free form or fixed on substrates, typically on activated magnesium chloride, titanium(III) chloride, alumina or silicon oxide. These catalysts may be soluble or insoluble in the polymerisation medium. The catalysts can be used by themselves in the polymerisation or further activators may be used, typically metal alkyls, metal hydrides, metal alkyl halides, metal alkyl oxides or metal alkyloxanes, said metals being elements of groups Ia, IIa and/or IIIa of the Periodic Table. The activators may be modified conveniently with further ester, ether, amine or silyl ether groups. These catalyst systems are usually termed Phillips, Standard Oil Indiana, Ziegler (-Natta), TNZ (DuPont), metallocene or single site catalysts (SSC).

2. Mixtures of the polymers mentioned under 1), for example mixtures of polypropylene with polyisobutylene, polypropylene with polyethylene (for example PP/HDPE, PP/LDPE) and mixtures of different types of polyethylene (for example LDPE/HDPE). 3. Copolymers of monoolefins and diolefins with each other or with other vinyl monomers, for example ethylene/propylene copolymers, linear low density polyethylene (LLDPE) and mixtures thereof with low density polyethylene (LDPE), propylene/but-1-ene copolymers, propylene/isobutylene copolymers, ethylene/but-1-ene copolymers, ethylene/hexene copolymers, ethylene/methylpentene copolymers, ethylene/heptene copolymers, ethylene/octene copolymers, propylene/butadiene copolymers, isobutylene/isoprene copolymers, ethyllene/alkyl acrylate copolymers, ethylene/alkyl methacrylate copolymers, ethylene/vinyl acetate copolymers and their copolymers with carbon monoxide or ethylene/acrylic acid copolymers and their salts (ionomers) as well as terpolymers of ethylene with propylene and a diene such as hexadiene, dicyclopentadiene or ethylidene-norbornene; and mixtures of such copolymers with one another and with polymers mentioned in 1) above, for example polypropylene/ethylene-propylene copolymers, LDPE/ethylene-vinyl acetate copolymers (EVA), LDPE/ethylene-acrylic acid copolymers (EAA), LLDPE/EVA, LLDPE/EAA and alternating or random polyalkylene/carbon monoxide copolymers and mixtures thereof with other polymers, for example polyamides. 4. Hydrocarbon resins (for example C₅-C₉) including hydrogenated modifications thereof (e.g. tackifiers) and mixtures of polyalkylenes and starch. 5. Polystyrene, poly(p-methylstyrene), poly(α-methylstyrene). 6. Copolymers of styrene or α-methylstyrene with dienes or acrylic derivatives, for example styrene/butadiene, styrene/acrylonitrile, styrene/alkyl methacrylate, styrene/butadiene/alkyl acrylate, styrene/butadiene/alkyl methacrylate, styrene/maleic anhydride, styrene/acrylonitrile/methyl acrylate; mixtures of high impact strength of styrene copolymers and another polymer, for example a polyacrylate, a diene polymer or an ethylene/propylene/diene terpolymer; and block copolymers of styrene such as styrene/butadiene/styrene, styrene/isoprene/styrene, styrene/ethylene/butylene/styrene or styrene/ethylene/propylene/styrene. 7. Graft copolymers of styrene or α-methylstyrene, for example styrene on polybutadiene, styrene on polybutadiene-styrene or polybutadiene-acrylonitrile copolymers; styrene and acrylonitrile (or methacrylonitrile) on polybutadiene; styrene, acrylonitrile and methyl methacrylate on polybutadiene; styrene and maleic anhydride on polybutadiene; styrene, acrylonitrile and maleic anhydride or maleimide on polybutadiene; styrene and maleimide on polybutadiene; styrene and alkyl acrylates or methacrylates on polybutadiene; styrene and acrylonitrile on ethylene/propylene/diene terpolymers; styrene and acrylonitrile on polyalkyl acrylates or polyalkyl methacrylates, styrene and acrylonitrile on acrylate/butadiene copolymers, as well as mixtures thereof with the copolymers listed under 6), for example the copolymer mixtures known as ABS, MBS, ASA or AES polymers. 8. Halogen-containing polymers such as polychloroprene, chlorinated rubbers, chlorinated and brominated copolymer of isobutylene-isoprene (halobutyl rubber), chlorinated or sulfo-chlorinated polyethylene, copolymers of ethylene and chlorinated ethylene, epichlorohydrin homo- and copolymers, especially polymers of halogen-containing vinyl compounds, for example polyvinyl chloride, polyvinylidene chloride, polyvinyl fluoride, polyvinylidene fluoride, as well as copolymers thereof such as vinyl chloride/vinylidene chloride, vinyl chloride/vinyl acetate or vinylidene chloride/vinyl acetate copolymers. 9. Polymers derived from α,β-unsaturated acids and derivatives thereof such as polyacrylates and polymethacrylates; polymethyl methacrylates, polyacrylamides and polyacrylonitriles, impact-modified with butyl acrylate. 10. Copolymers of the monomers mentioned under 9) with each other or with other unsaturated monomers, for example acrylonitrile/butadiene copolymers, acrylonitrile/alkyl acrylate copolymers, acrylonitrile/alkoxyalkyl acrylate or acrylonitrile/vinyl halide copolymers or acrylonitrile/alkyl methacrylate/butadiene terpolymers. 11. Polymers derived from unsaturated alcohols and amines or the acyl derivatives or acetals thereof, for example polyvinyl alcohol, polyvinyl acetate, polyvinyl stearate, polyvinyl benzoate, polyvinyl maleate, polyvinyl butyral, polyallyl phthalate or polyallyl melamine; as well as their copolymers with olefins mentioned in 1) above. 12. Homopolymers and copolymers of cyclic ethers such as polyalkylene glycols, polyethylene oxide, polypropylene oxide or copolymers thereof with bisglycidyl ethers. 13. Polyacetals such as polyoxymethylene and those polyoxymethylenes which contain ethylene oxide as a comonomer; polyacetals modified with thermoplastic polyurethanes, acrylates or MBS. 14. Polyphenylene oxides and sulfides, and mixtures of polyphenylene oxides with styrene polymers or polyamides. 15. Polyurethanes derived from hydroxyl-terminated polyethers, polyesters or polybutadienes on the one hand and aliphatic or aromatic polyisocyanates on the other, as well as precursors thereof. 16. Polyamides and copolyamides derived from diamines and dicarboxylic acids and/or from aminocarboxylic acids or the corresponding lactams, for example polyamide 4, polyamide 6, polyamide 6/6, 6/10, 6/9, 6/12, 4/6, 12/12, polyamide 11, polyamide 12, aromatic polyamides starting from m-xylene diamine and adipic acid; polyamides prepared from hexamethylenediamine and isophthalic or/and terephthalic acid and with or without an elastomer as modifier, for example poly-2,4,4,-trimethylhexamethylene terephthalamide or poly-m-phenylene isophthalamide; and also block copolymers of the aforementioned polyamides with polyolefins, olefin copolymers, ionomers or chemically bonded or grafted elastomers; or with polyethers, e.g. with polyethylene glycol, polypropylene glycol or polytetramethylene glycol; as well as polyamides or copolyamides modified with EPDM or ABS; and polyamides condensed during processing (RIM polyamide systems). 17. Polyureas, polyimides, polyamide-imides, polyetherimids, polyesterimids, polyhydantoins and polybenzimidazoles. 18. Polyesters derived from dicarboxylic acids and diols and/or from hydroxycarboxylic acids or the corresponding lactones, for example polyethylene terephthalate, polybutylene terephthalate, poly-1,4-dimethylolcyclohexane terephthalate, polyalkylene naphthalate (PAN) and polyhydroxybenzoates, as well as block copolyether esters derived from hydroxyl-terminated polyethers; and also polyesters modified with polycarbonates or MBS. 19. Polycarbonates and polyester carbonates. 20. Polysulfones, polyether sulfones and polyether ketones. 21. Crosslinked polymers derived from aldehydes on the one hand and phenols, ureas and melamines on the other hand, such as phenol/formaldehyde resins, urea/formaldehyde resins and melamine/formaldehyde resins. 22. Drying and non-drying alkyd resins. 23. Unsaturated polyester resins derived from copolyesters of saturated and unsaturated dicarboxylic acids with polyhydric alcohols and vinyl compounds as crosslinking agents, and also halogen-containing modifications thereof of low flammability. 24. Crosslinkable acrylic resins derived from substituted acrylates, for example epoxy acrylates, urethane acrylates or polyester acrylates. 25. Alkyd resins, polyester resins and acrylate resins crosslinked with melamine resins, urea resins, isocyanates, isocyanurates, polyisocyanates or epoxy resins. 26. Crosslinked epoxy resins derived from aliphatic, cycloaliphatic, heterocyclic or aromatic glycidyl compounds, e.g. products of diglycidyl ethers of bisphenol A and bisphenol F, which are crosslinked with customary hardeners such as anhydrides or amines, with or without accelerators. 27. Natural polymers such as cellulose, rubber, gelatin and chemically modified homologous derivatives thereof, for example cellulose acetates, cellulose propionates and cellulose butyrates, or the cellulose ethers such as methyl cellulose; as well as rosins and their derivatives. 28. Blends of the aforementioned polymers (polyblends), for example PP/EPDM, Polyamide/EPDM or ABS, PVC/EVA, PVC/ABS, PVC/MBS, PC/ABS, PBTP/ABS, PC/ASA, PC/PBT, PVC/CPE, PVC/acrylates, POM/thermoplastic PUR, PC/thermoplastic PUR, POM/acrylate, POM/MBS, PPO/HIPS, PPO/PA 6.6 and copolymers, PA/HDPE, PA/PP, PA/PPO, PBT/PC/ABS or PBT/PET/PC. 29. Naturally occurring and synthetic organic materials which are pure monomeric compounds or mixtures of such compounds, for example mineral oils, animal and vegetable fats, oil and waxes, or oils, fats and waxes based on synthetic esters (e.g. phthalates, adipates, phosphates or trimellitates) and also mixtures of synthetic esters with mineral oils in any weight ratios, typically those used as spinning compositions, as well as aqueous emulsions of such materials. 30. Aqueous emulsions of natural or synthetic rubber, e.g. natural latex or latices of carboxylated styrene/butadiene copolymers.

This invention therefore additionally relates to a composition comprising an organic material subject to degradation induced by light, heat or oxidation and the stabilizer mixture described herein above.

A further embodiment of the present invention is a method for stabilizing an organic material against degradation induced by light, heat or oxidation, which comprises incorporating into the organic material the stabilizer mixture described herein above.

The organic material is preferably a synthetic polymer, in particular from one of the above groups. Polyolefins are preferred and polyethylene, polypropylene, a polyethylene copolymer and a polypropylene copolymer are particularly preferred.

The compounds of components (A) and (B) may be added to the organic material to be stabilized either individually or mixed with one another.

Each of the compounds of components (A) and (B) may be present in the organic material in an amount of preferably 0.005 to 5%, in particular 0.01 to 1% or 0.05 to 1%, relative to the weight of the organic material.

The weight ratio of the components (A):(B) is preferably 10:1 to 1:100, in particular 10:1 to 1:10 or 5:1 to 1:5. Further examples for the weight ratio are also 1:1 to 1:10, for example 1:2 to 1:5.

The weight ratio of the two components forming component (B) is for example 1:10 to 10:1 or 1:5 to 5:1, preferably 1:2 to 2:1, in particular 1:1.

The above components can be incorporated into the organic material to be stabilized by known methods, for example before or during shaping or by applying the dissolved or dispersed compounds to the organic material, if necessary with subsequent evaporation of the solvent. The components can be added to the organic material in the form of a powder, granules or a masterbatch, which contains these components in, for example, a concentration of from 2.5 to 25% by weight.

If desired, the compounds of components (A) and (B) can be blended with each other before incorporation in the organic material. They can be added to a polymer before or during the polymerization or before the crosslinking.

The materials stabilized according to this invention can be used in a wide variety of forms, for example as films, fibres, tapes, moulding compositions, profiles or as binders for paints, adhesives or putties.

The stabilized material may additionally also contain various conventional additives, for example:

1. Antioxidants

1.1. Alkylated monophenols, for example 2,6-di-tert-butyl-4-methylphenol, 2-tert-butyl-4,6-dimethylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2,6-di-tert-butyl-4-n-butylphenol, 2,6-di-tert-butyl-4-isobutylphenol, 2,6-dicyclopentyl-4-methylphenol, 2-(α-methylcyclohexyl)-4,6-dimethylphenol, 2,6-dioctadecyl-4-methylphenol, 2,4,6-tricyclohexylphenol, 2,6-di-tert-butyl-4-methoxymethylphenol, nonylphenols which are linear or branched in the side chains, for example 2,6-di-nonyl-4-methylphenol, 2,4-dimethyl-6-(1′-methylundec-1′-yl)phenol, 2,4-dimethyl-6-(1′-methylheptadec-1′-yl)phenol, 2,4-dimethyl-6-(1′-methyltridec-1′-yl)phenol and mixtures thereof.

1.2. Alkylthiomethylphenols, for example 2,4-dioctylthiomethyl-6-tert-butylphenol, 2,4-dioctylthiomethyl-6-methylphenol, 2,4-dioctylthiomethyl-6-ethylphenol, 2,6-di-dodecylthiomethyl-4-nonylphenol.

1.3. Hydroquinones and alkylated hydroquinones, for example 2,6-di-tert-butyl-4-methoxyphenol, 2,5-di-tert-butylhydroquinone, 2,5-di-tert-amylhydroquinone, 2,6-diphenyl-4-octadecyloxyphenol, 2,6-di-tert-butylhydroquinone, 2,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyphenyl stearate, bis(3,5-di-tert-butyl-4-hydroxyphenyl) adipate.

1.4. Tocopherols, for example α-tocopherol, β-tocopherol, γ-tocopherol, 67-tocopherol and mixtures thereof (vitamin E).

1.5. Hydroxylated thiodiphenyl ethers, for example 2,2′-thiobis(6-tert-butyl-4-methylphenol), 2,2′-thiobis(4-octylphenol), 4,4′-thiobis(6-tert-butyl-3-methylphenol), 4,4′-thiobis(6-tert-butyl-2-methylphenol), 4,4′-thiobis(3,6-di-sec-amylphenol), 4,4′-bis(2,6-dimethyl-4-hydroxyphenyl)-disulfide.

1.6. Alkylidenebisphenols, for example 2, 2′-methylenebis(6-tert-butyl-4-methylphenol), 2,2′-methylenebis(6-tert-butyl-4-ethylphenol), 2,2′-methylenebis[4-methyl-6-(α-methylcyclohexyl)-phenol], 2,2′-methylenebis(4-methyl-6-cyclohexylphenol), 2,2′-methylenebis(6-nonyl-4-methylphenol), 2,2′-methylenebis(4,6-di-tert-butylphenol), 2,2′-ethylidenebis(4,6-di-tert-butylphenol), 2,2′-ethylidenebis(6-tert-butyl-4-isobutylphenol), 2,2′-methylenebis[6-(α-methylbenzyl)-4-nonylphenol], 2,2′-methylenebis[6-(α,α-dimethylbenzyl)-4-nonylphenol], 4,4′-methyllenebis(2,6-di-tert-butylphenol), 4,4′-methylenebis(6-tert-butyl-2-methylphenol), 1,1-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butane, 2,6-bis(3-tert-butyl-5-methyl-2-hydroxybenzyl)-4-methylphenol, 1,1,3-tris(5-tert-butyl-4-hydroxy-2-methylphenyl)butane, 1,1-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)-3-n-dodecylmercaptobutane, ethylene glycol bis[3,3-bis(3′-tert-butyl-4′-hydroxyphenyl)butyrate], bis(3-tert-butyl-4-hydroxy-5-methyl-phenyl)dicyclopentadiene, bis[2-(3′-tert-butyl-2′-hydroxy-5′-methylbenzyl)-6-tert-butyl-4-methylphenyl]terephthalate, 1,1-bis-(3,5-dimethyl-2-hydroxyphenyl)butane, 2,2-bis(3,5-di-tert-butyl-4-hydroxyphenyl)propane, 2,2-bis-(5-tert-butyl-4-hydroxy-2-methylphenyl)-4-n-dodecylmercaptobutane, 1,1,5,5-tetra(5-tert-butyl-4-hydroxy-2-methylphenyl)pentane.

1.7. O-, N- and S-benzyl compounds, for example 3,5,3′,5′-tetra-tert-butyl-4,4′-dihydroxydibenzyl ether, octadecyl-4-hydroxy-3,5-dimethylbenzylmercaptoacetate, tridecyl-4-hydroxy-3,5-di-tert-butylbenzylmercaptoacetate, tris(3,5-di-tert-butyl-4-hydroxybenzyl)amine, bis(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)dithioterephthalate, bis(3,5-di-tert-butyl-4-hydroxybenzyl)sulfide, isooctyl-3,5-di-tert-butyl-4-hydroxybenzylmercaptoacetate.

1.8. Hydroxybenzylated malonates, for example dioctadecyl-2,2-bis(3,5-di-tert-butyl-2-hydroxybenzyl)malonate, di-octadecyl-2-(3-tert-butyl-4-hydroxy-5-methylbenzyl)malonate, di-dodecylmercaptoethyl-2,2-bis(3,5-di-tert-butyl-4-hydroxybenzyl)malonate, bis[4-(1,1,3,3-tetramethylbutyl)phenyl]-2,2-bis(3,5-di-tert-butyl-4-hydroxybenzyl)malonate.

1.9. Aromatic hydroxybenzyl compounds, for example 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene, 1,4-bis(3,5-di-tert-butyl-4-hydroxybenzyl)-2,3,5,6-tetramethylbenzene, 2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)phenol.

1.10. Triazine compounds, for example 2,4-bis(octylmercapto)-6-(3,5-di-tert-butyl-4-hydroxyanilino)-1,3,5-triazine, 2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyanilino)-1,3,5-triazine, 2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,3,5-triazine, 2,4,6-tris-(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,2,3-triazine, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate, 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate, 2,4,6-tris-(3,5-di-tert-butyl-4-hydroxyphenylethyl)-1,3,5-triazine, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)-hexahydro-1,3,5-triazine, 1,3,5-tris(3,5-dicyclohexyl-4-hydroxybenzyl)isocyanurate.

1.11. Benzylphosphonates, for example dimethyl-2,5-di-tert-butyl-4-hydroxybenzylphosphonate, diethyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl-5-tert-butyl-4-hydroxy-3-methylbenzylphosphonate, the calcium salt of the monoethyl ester of 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid.

1.12. Acylaminophenols, for example 4-hydroxylauranilide, 4-hydroxystearanilide, octyl N-(3,5-di-tert-butyl-4-hydroxyphenyl)carbamate.

1.13. Esters of β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid with mono- or polyhydric alcohols, e.g. with methanol, ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N′-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.

1.14. Esters of β-(5-tert-butyl-4-hydroxy-3-methylphenyl)propionic acid with mono- or poly-hydric alcohols, e.g. with methanol, ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N′-bis-(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane; 3,9-bis[2-{3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]-undecane.

1.15. Esters of β-(3,5-dicyclohexVl-4-hydroxyphenyl)propionic acid with mono- or polyhydric alcohols, e.g. with methanol, ethanol, octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N′-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.

1.16. Esters of 3,5-di-tert-butyl-4-hydroxyPhenvi acetic acid with mono- or polyhydric alcohols, e.g. with methanol, ethanol, octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N′-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.

1.17. Amides of β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid e.g. N,N′-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexamethylenediamide, N,N′-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)trimethylenediamide, N,N′-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hydrazide, N,N′-bis[2-(3-[3,5-di-tert-butyl-4-hydroxyphenyl]propionyloxy)ethyl]oxamide (Naugard®XL-1, supplied by Uniroyal).

1.18. Ascorbic acid (vitamin C)

1.19. Aminic antioxidants, for example N,N′-di-isopropyl-p-phenylenediamine, N,N′-di-sec-butyl-p-phenylenediamine, N,N′-bis(1,4-dimethylpentyl)-p-phenylenediamine, N,N′-bis(1-ethyl-3-methylpentyl)-p-phenylenediamine, N,N′-bis(1-methylheptyl)-p-phenylenediamine, N,N′-dicyclohexyl-p-phenylenediamine, N,N′-diphenyl-p-phenylenediamine, N,N′-bis(2-naphthyl)-p-phenylenediamine, N-isopropyl-N′-phenyl-p-phenylenediamine, N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine, N-(1-methylheptyl)-N′-phenyl-p-phenylenediamine, N-cyclohexyl-N′-phenyl-p-phenylenediamine, 4-(p-toluenesulfamoyl)diphenylamine, N,N′-dimethyl-N,N′-di-sec-butyl-p-phenylenediamine, diphenylamine, N-allyldiphenylamine, 4-isopropoxydiphenylamine, N-phenyl-1-naphthylamine, N-(4-tert-octylphenyl)-1-naphthylamine, N-phenyl-2-naphthylamine, octylated diphenylamine, for example p,p′-di-tert-octyldiphenylamine, 4-n-butyl-aminophenol, 4-butyrylaminophenol, 4-nonanoylaminophenol, 4-dodecanoylaminophenol, 4-octadecanoylaminophenol, bis(4-methoxyphenyl)amine, 2,6-di-tert-butyl-4-dimethylamino-methylphenol, 2,4′-diaminodiphenylmethane, 4,4′-diaminodiphenylmethane, N,N,N′,N′-tetra-methyl-4,4′-diaminodiphenylmethane, 1,2-bis[(2-methylphenyl)amino]ethane, 1,2-bis(phenyl-amino)propane, (o-tolyl)biguanide, bis[4-(1′,3′-dimethylbutyl)phenyl]amine, tert-octylated N-phenyl-1-naphthylamine, a mixture of mono- and dialkylated tert-butyl/tert-octyldiphenylamines, a mixture of mono- and dialkylated nonyidiphenylamines, a mixture of mono- and dialkylated dodecyldiphenylamines, a mixture of mono- and dialkylated isopropyl/isohexyl-diphenylamines, a mixture of mono- and dialkylated tert-butyldiphenylamines, 2,3-dihydro-3,3-dimethyl-4H-1,4-benzothiazine, phenothiazine, a mixture of mono- and dialkylated tert-butyl/tert-octylphenothiazines, a mixture of mono- and dialkylated tert-octylphenothiazines, N-allylphenothiazine, N,N,N′,N′-tetraphenyl-1,4-diaminobut-2-ene, N,N-bis(2,2,6,6-tetramethylpiperid-4-yl-hexamethylenediamine, bis(2,2,6,6-tetramethylpiperid-4-yl)sebacate, 2,2,6,6-tetramethylpiperidin-4-one, 2,2,6,6-tetramethylpiperidin-4-ol.

2. UV Absorbers and Light Stabilisers

2.1. 2-(2′-Hydroxyphenyl)benzotriazoles, for example 2-(2′-hydroxy-5′-methylphenyl)benzotriazole, 2-(3′,5′-di-tert-butyl-2′-hydroxyphenyl)benzotriazole, 2-(5′-tert-butyl-2′-hydroxyphenyl)benzotriazole, 2-(2′-hydroxy-5′-(1,1,3,3-tetramethylbutyl)phenyl)benzotriazole, 2-(3′,5′-di-tert-butyl-2′-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3′-tert-butyl-2′-hydroxy-5′-methylphenyl)-5-chlorobenzotriazole, 2-(3′-sec-butyl-5′-tert-butyl-2′-hydroxyphenyl)benzotriazole, 2-(2′-hydroxy-4′-octyloxyphenyl)benzotriazole, 2-(3′,5′-di-tert-amyl-2′-hydroxyphenyl)benzotriazole, 2-(3′,5′-bis(α,α-dimethylbenzyl)-2′-hydroxyphenyl)benzotriazole, 2-(3′-tert-butyl-2′-hydroxy-5′-(2-octyloxycarbonylethyl)phenyl)-5-chlorobenzotriazole, 2-(3′-tert-butyl-5′-[2-(2-ethylhexyloxy)carbonylethyl]-2′-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3′-tert-butyl-2′-hydroxy-5′-(2-methoxycarbonylethyl)phenyl)-5-chlorobenzotriazole, 2-(3′-tert-butyl-2′-hydroxy-5′-(2-methoxycarbonylethyl)phenyl)benzotriazole, 2-(3′-tert-butyl-2′-hydroxy-5′-(2-octyloxycarbonylethyl)phenyl)benzotriazole, 2-(3′-tert-butyl-5′-[2-(2-ethylhexyloxy)carbonylethyl]-2′-hydroxyphenyl)benzotriazole, 2-(3′-dodecyl-2′-hydroxy-5′-methylphenyl)benzotriazole, 2-(3′-tert-butyl-2′-hydroxy-5′-(2-isooctyloxycarbonylethyl)phenylbenzotriazole, 2,2′-methylenebis[4-(1,1,3,3-tetramethylbutyl)-6-benzotriazole-2-ylphenol]; the transesterification product of 2-[3′-tert-butyl-5′-(2-methoxycarbonylethyl)-2′-hydroxyphenyl]-2H-benzotriazole with polyethylene glycol 300; [R—CH₂CH₂—COO—CH₂CH₂₂, where R=3′-tert-butyl-4′-hydroxy-5′-2H-benzotriazol-2-ylphenyl, 2-[2′-hydroxy-3′-(α,α-dimethylbenzyl)-5′-(1,1,3,3-tetramethylbutyl)phenyl]-benzotriazole; 2-[2′-hydroxy-3′-(1,1,3,3-tetramethylbutyl)-5′-(α,α-dimethylbenzyl)phenyl]benzotriazole.

2.2. 2-Hydroxybenzophenones, for example the 4-hydroxy, 4-methoxy, 4-octyloxy, 4-decyloxy, 4-dodecyloxy, 4-benzyloxy, 4,2′,4′-trihydroxy and 2′-hydroxy-4,4′-dimethoxy derivatives.

2.3. Esters of substituted and unsubstituted benzoic acids, for example 4-tert-butylphenyl salicylate, phenyl salicylate, octylphenyl salicylate, dibenzoyl resorcinol, bis(4-tert-butylbenzoyl)resorcinol, benzoyl resorcinol, 2,4-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate, hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, octadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, 2-methyl-4,6-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate.

2.4. Acrylates, for example ethyl α-cyano-β,β-diphenylacrylate, isooctyl α-cyano-β,β-diphenylacrylate, methyl α-carbomethoxycinnamate, methyl α-cyano-β-methyl-p-methoxycinnamate, butyl α-cyano-β-methyl-p-methoxycinnamate, methyl α-carbomethoxy-p-methoxycinnamate and N-(β-carbomethoxy-β-cyanovinyl)-2-methylindoline.

2.5. Nickel compounds, for example nickel complexes of 2,2′-thiobis[4-(1,1,3,3-tetramethyl-butyl)phenol], such as the 1:1 or 1:2 complex, with or without additional ligands such as n-butylamine, triethanolamine or N-cyclohexyldiethanolamine, nickel dibutyldithiocarbamate, nickel salts of the monoalkyl esters, e.g. the methyl or ethyl ester, of 4-hydroxy-3,5-di-tert-butylbenzylphosphonic acid, nickel complexes of ketoximes, e.g. of 2-hydroxy-4-methylphenylundecylketoxime, nickel complexes of 1-phenyl-4-lauroyl-5-hydroxypyrazole, with or without additional ligands.

2.6. Oxamides, for example 4,4′-dioctyloxyoxanilide, 2,2′-diethoxyoxanilide, 2,2′-dioctyloxy-5,5′-di-tert-butoxanilide, 2,2′-didodecyloxy-5,5′-di-tert-butoxanilide, 2-ethoxy-2′-ethyloxanilide, N,N′-bis(3-dimethylaminopropyl)oxamide, 2-ethoxy-5-tert-butyl-2′-ethoxanilide and its mixture with 2-ethoxy-2′-ethyl-5,4′-di-tert-butoxanilide, mixtures of o- and p-methoxy-disubstituted oxanilides and mixtures of o- and p-ethoxy-disubstituted oxanilides.

2.7. 2-(2-Hydroxyphenyl)-1,3,5-triazines, for example 2,4,6-tris(2-hydroxy-4-octyloxyphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-(2,4-dihydroxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2,4-bis(2-hydroxy-4-propyloxyphenyl)-6-(2,4-dimethylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(4-methylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-dodecyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-tridecyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-butyloxypropoxy)phenyl]-4,6-bis(2,4-dimethyl)-1,3,5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-octyloxypropyloxy)phenyl]-4,6-bis(2,4-dimethyl)-1,3,5-triazine, 2-[4-(dodecyloxy/tridecyloxy-2-hydroxypropoxy)-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-dodecyloxypropoxy)phenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-hexyloxy)phenyl-4,6-diphenyl-1,3,5-triazine, 2-(2-hydroxy-4-niethoxyphenyl)-4,6-diphenyl-1,3,5-triazine, 2,4,6-tris[2-hydroxy-4-(3-butoxy-2-hydroxypropoxy)phenyl]-1,3,5-triazine, 2-(2-hydroxyphenyl)-4-(4-methoxyphenyl)-6-phenyl-1,3,5-triazine, 2-{2-hydroxy-4-[3-(2-ethylhexyl-1-oxy)-2-hydroxypropyloxy]phenyl}-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine.

3. Metal deactivators, for example N,N′-diphenyloxamide, N-salicylal-N′-salicyloyl hydrazine, N,N′-bis(salicyloyl)hydrazine, N,N′-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hydrazine, 3-salicyloylamino-1,2,4-triazole, bis(benzylidene)oxalyl dihydrazide, oxanilide, isophthaloyl dihydrazide, sebacoyl bisphenylhydrazide, N,N′-diacetyladipoyl dihydrazide, N,N′-bis(salicyloyl)oxalyl dihydrazide, N,N′-bis(salicyloyl)thiopropionyl dihydrazide.

4. Phosphites and phosphonites, for example triphenyl phosphite, diphenylalkyl phosphites, phenyldialkyl phosphites, tris(nonylphenyl) phosphite, trilauryl phosphite, trioctadecyl phosphite, distearylpentaerythritol diphosphite, tris(2,4-di-tert-butylphenyl) phosphite, diisodecyl pentaerythritol diphosphite, bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, bis(2,4-di-cumylphenyl)pentaerythritol diphosphite, bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite, diisodecyloxypentaerythritol diphosphite, bis(2,4-di-tert-butyl-6-methylphenyl)-pentaerythritol diphosphite, bis(2,4,6-tris(tert-butylphenyl)pentaerythritol diphosphite, tristearyl sorbitol triphosphite, tetrakis(2,4-di-tert-butylphenyl) 4,4′-biphenylene diphosphonite, 6-isooctyloxy-2,4,8,10-tetra-tert-butyl-12H-dibenz[d,g]-1,3,2-dioxaphosphocin, bis(2,4-di-tert-butyl-6-methylphenyl)methyl phosphite, bis(2,4-di-tert-butyl-6-methylphenyl)ethyl phosphite, 6-fluoro-2,4,8,10-tetra-tert-butyl-12-methyl-dibenz[d,g]-1,3,2-dioxaphosphocin, 2,2′,2″-nitrilo-[triethyltris(3,3′,5,5′-tetra-tert-butyl-1,1′-biphenyl-2,2′-diyl)phosphite], 2-ethylhexyl(3,3′,5,5′-tetra-tert-butyl-1,1′-biphenyl-2,2′-diyl)phosphite, 5-butyl-5-ethyl-2-(2,4,6-tri-tert-butylphenoxy)-1,3,2-dioxaphosphirane.

The following phosphites are especially preferred:

Tris(2,4-di-tert-butylphenyl) phosphite (Irgafos®168, Ciba-Geigy), tris(nonylphenyl) phosphite,

5. Hydroxylamines, for example N,N-dibenzylhydroxylamine, N,N-diethylhydroxylamine, N,N-dioctylhydroxylamine, N,N-dilaurylhydroxylamine, N,N-ditetradecylhydroxylamine, N,N-dihexadecylhydroxylamine, N,N-dioctadecylhydroxylamine, N-hexadecyl-N-octadecylhydroxyylamine, N-heptadecyl-N-octadecylhydroxylamine, N,N-dialkylhydroxylamine derived from hydrogenated tallow amine.

6. Nitrones, for example N-benzyl-alpha-phenylnitrone, N-ethyl-alpha-methylnitrone, N-octyl-alpha-heptylnitrone, N-lauryl-alpha-undecylnitrone, N-tetradecyl-alpha-tridecylnitrone, N-hexadecyl-alpha-pentadecylnitrone, N-octadecyl-alpha-heptadecylnitrone, N-hexadecyl-alpha-heptadecylnitrone, N-ocatadecyl-alpha-pentadecylnitrone, N-heptadecyl-alpha-heptadecylnitrone, N-octadecyl-alpha-hexadecylnitrone, nitrone derived from N,N-dialkylhydroxylamine derived from hydrogenated tallow amine.

7. Thiosynergists, for example dilauryl thiodipropionate or distearyl thiodipropionate.

8. Peroxide scavengers, for example esters of β-thiodipropionic acid, for example the lauryl, stearyl, myristyl or tridecyl esters, mercaptobenzimidazole or the zinc salt of 2-mercaptobenzimidazole, zinc dibutyldithiocarbamate, dioctadecyl disulfide, pentaerythritol tetrakis(β-dodecylmercapto)propionate.

9. Polyamide stabilisers, for example copper salts in combination with iodides and/or phosphorus compounds and salts of divalent manganese.

10. Basic co-stabilisers, for example melamine, polyvinylpyrrolidone, dicyandiamide, triallyl cyanurate, urea derivatives, hydrazine derivatives, amines, polyamides, polyurethanes, alkali metal salts and alkaline earth metal salts of higher fatty acids, for example calcium stearate, zinc stearate, magnesium behenate, magnesium stearate, sodium ricinoleate and potassium palmitate, antimony pyrocatecholate or zinc pyrocatecholate.

11. Nucleating agents, for example inorganic substances, such as talcum, metal oxides, such as titanium dioxide or magnesium oxide, phosphates, carbonates or sulfates of, preferably, alkaline earth metals; organic compounds, such as mono- or polycarboxylic acids and the salts thereof, e.g. 4-tert-butylbenzoic acid, adipic acid, diphenylacetic acid, sodium succinate or sodium benzoate; polymeric compounds, such as ionic copolymers (ionomers). Especially preferred are 1,3:2,4-bis(3′,4′-dimethylbenzylidene)sorbitol, 1,3:2,4-di(paramethyl-dibenzylidene)sorbitol, and 1,3:2,4-di(benzylidene)sorbitol.

12. Fillers and reinforcing agents, for example calcium carbonate, silicates, glass fibres, glass bulbs, asbestos, talc, kaolin, mica, barium sulfate, metal oxides and hydroxides, carbon black, graphite, wood flour and flours or fibers of other natural products, synthetic fibers.

13. Other additives, for example plasticisers, lubricants, emulsifiers, pigments, rheology additives, catalysts, flow-control agents, optical brighteners, flameproofing agents, antistatic agents and blowing agents.

14. Benzofuranones and indolinones, for example those disclosed in U.S. Pat. No. 4,325,863; U.S. Pat. No. 4,338,244; U.S. Pat. No. 5,175,312; U.S. Pat. No. 5,216,052; U.S. Pat. No. 5,252,643; DE-A-4316611; DE-A-4316622; DE-A-4316876; EP-A-0589839 or EP-A-0591102 or 3-[4-(2-acetoxyethoxy)-phenyl]-5,7-di-tert-butylbenzofuran-2-one, 5,7-di-tert-butyl-3-[4-(2-stearoyloxyethoxy)phenyl]-benzofuran-2-one, 3,3′-bis[5,7-di-tert-butyl-3-(4-[2-hydroxyethoxy]phenyl)benzofuran-2-one], 5,7-di-tert-butyl-3-(4-ethoxyphenyl)benzofuran-2-one, 3-(4-acetoxy-3,5-dimethylphenyl)-5,7-di-tert-butylbenzofuran-2-one, 3-(3,5-dimethyl-4-pivaloyloxyphenyl)-5,7-di-tert-butylbenzofuran-2-one, 3-(3,4-dimethylphenyl)-5,7-di-tert-butylbenzofuran-2-one, 3-(2,3-dimethylphenyl)-5,7-di-tert-butylbenzofuran-2-one.

The weight ratio of the total amount of components (A) and (B) to the total amount of the conventional additives can be, for example, 100:1 to 1:100 or 10:1 to 1:10.

The examples below illustrate the invention in greater detail. All percentages and parts are by weight, unless stated otherwise.

Light Stabilizers Used in the Following Examples 1 and 2 TINUVIN 622®

Mixture (A-2):

Mixture of the compounds (A-2-a) and (A-2-b) in a weight ratio of 4:1

Compound (B-1-a-1):

TINUVIN 770®:

TINUVIN 765®:

TINUVIN 123®:

TINUVIN 144®:

ADK STAB LA 52®:

ADK STAB LA 57®:

ADK STAB LA 62®:

in which two of the radicals E₇ are —COO—C₁₃H₂₇ and two of the radicals E₇ are

ADK STAB LA 67®:

in which two of the radicals E₇ are —COO—C₁₃H₂₇ and two of the radicals E₇ are

HOSTAVIN N 20®:

SANDUVOR 3050®:

HOSTAVIN N 24®:

UVINUL 4049 H®:

Compound (B-6-a-1):

Compound (B-6-a-2):

SANDUVOR PR 31®:

GOODRITE UV 3034®:

GOODRITE UV 3150®:

Compound (B-10-a-1):

Compound (B-7-1):

in which E₁₉, E₂₀ and E₂₁ are the group

EXAMPLE 1 Light Stabilization of Polypropylene Homopolymer Films

100 parts of unstabilized polypropylene powder (melt flow index: 2.4 g/10 minutes at 230° C. and 2160 g) are homogenized at 200° C. for 10 minutes in a Brabender plastograph with 0.05 parts of pentaerythrityl-tetrakis{3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate}, 0.05 parts of tris{2,4-di-tert-butylphenyl} phosphite, 0.1 parts of Ca stearate, 0.25 parts of titanium dioxide (anatase) and the stabilizer system indicated Table 1. The material thus obtained is compression molded in a laboratory press between two aluminum foils for 6 minutes at 260° C. to a 0.5 mm thick film which is cooled immediately to room temperature in a water-cooled press. Samples of 60 mm×25 mm are cut out of these 0.5 mm films and are exposed in a WEATHER-OMETER Ci 65 (black panel temperature 63±2° C., without water-spraying).

Periodically, these samples are removed from the exposure apparatus and their carbonyl content is measured with an infrared spectrophotometer.

The exposure time (T_(0.1)) corresponding to the formation of a carbonyl absorbance of 0.1 is a measure for the efficiency of the light stabilizer system. The values obtained are summarized in Table 1. High T_(0.1) values are desired.

TABLE 1 T_(0.1) in hours Light stabilizer system in combination with TINUVIN 622 (RTM) T_(0.1) in hours The amount of The amount of the the light light stabilizers stabilizers used used is 0.075% is 0.05% Light stabilizer system each*). each*). Without 185 — TINUVIN 770 (RTM) + TINUVIN 765 (RTM) 1780 3095 TINUVIN 770 (RTM) + TINUVIN 144 (RTM) 1990 2815 TINUVIN 770 (RTM) + TINUVIN 123 (RTM) 1780 2650 TINUVIN 770 (RTM) + HOSTAVIN N 20 (RTM) 2760 3205 TINUVIN 770 (RTM) + ADK STAB LA 57 (RTM) 2245 3045 TINUVIN 770 (RTM) + GOODRITE UV 3034 (RTM) 2440 3570 TINUVIN 770 (RTM) + GOODRITE UV 3150 (RTM) 2715 3230 TINUVIN 770 (RTM) + Compound (B-6-a-1) 1930 3095 TINUVIN 770 (RTM) + Compound (B-6-a-2) 2000 3400 TINUVIN 770 (RTM) + Compound (B-10-a-1) 3510 3940 TINUVIN 770 (RTM) + Compound (B-1-a-1) 1715 3520 TINUVIN 770 (RTM) + SANDUVOR 3050 (RTM) 1630 3040 TINUVIN 770 (RTM) + SANDUVOR PR-31 (RTM) 1885 2730 HOSTAVIN N 20 (RTM) + ADK STAB LA 57 (RTM) 2485 2765 HOSTAVIN N 20 (RTM) + Compound (B-6-a-1) 2625 3010 HOSTAVIN N 20 (RTM) + UVINUL 4049 H (RTM) 2655 3245 HOSTAVIN N 20 (RTM) + Compound (B-1-a-1) 2510 3055 HOSTAVIN N 20 (RTM) + SANDUVOR PR-31 (RTM) 2120 3140 ADK STAB LA 57 (RTM) + TINUVIN 765 (RTM) 2290 2705 ADK STAB LA 57 (RTM) + GOODRITE UV 3150 (RTM) 2305 2930 ADK STAB LA 57 (RTM) + Compound (B-6-a-2) 2255 2745 ADK STAB LA 57 (RTM) + UVINUL 4049 H (RTM) 2400 2735 ADK STAB LA 57 (RTM) + SANDUVOR PR-31 (RTM) 1670 2655 GOODRITE UV 3150 (RTM) + Compound (B-6-a-1) 2390 3040 GOODRITE UV 3150 (RTM) + Compound (B-6-a-2) 2155 2670 GOODRITE UV 3150 (RTM) + SANDUVOR PR-31 (RTM) 2075 2840 Compound (B-6-a-1) + TINUVIN 765 (RTM) 2230 3010 Compound (B-6-a-1) + Compound (B-6-a-2) 2235 2980 Compound (B-6-a-1) + UVINUL 4049 H (RTM) 2465 3235 Compound (B-6-a-1) + Compound (B-1-a-1) 2225 2775 Compound (B-10-a-1) + UVINUL 4049 H (RTM) 3430 4055 Compound (B-10-a-1) + SANDUVOR PR-31 (RTM) 2710 3255 Compound (B-1-a-1) + TINUVIN 765 (RTM) 2365 3060 Compound (B-1-a-1) + UVINUL 4049 H (RTM) 2475 3205 Compound (B-1-a-1) + SANDUVOR PR-31 (RTM) 1845 2550 Compound (B-1-a-1) + Compound (B-6-a-2) 2240 2650 *)The overall concentration of the light stabilizers is 0.15%.

EXAMPLE 2 Light Stabilization of Polypropylene Homopolymer Films

100 parts of unstabilized polypropylene powder (melt flow index: 3.8 g/10 minutes at 230° C. and 2160 g) are homogenized at 200° C. for 10 minutes in a Brabender plastograph with 0.05 parts of pentaerythrityl {tetrakis-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate}, 0.05 parts of tris{2,4-di-tert-butylphenyl)phosphite}, 0.1 parts of Ca stearate, 0.25 parts of titanium dioxide (anatase) and the stabilizer system indicated in Tables 2A to 2H. The material thus obtained is compression molded in a laboratory press between two aluminum foils for 6 minutes at 260° C. to a 0.5 mm thick film which is cooled immediately to room temperature in a water-cooled press. Samples of 60 mm×25 mm are cut out of these 0.5 mm films and are exposed in a WEATHER-OMETER Ci 65 (black panel temperature 63±2° C., without water-spraying).

Periodically, these samples are removed from the exposure apparatus and their carbonyl content is measured with an infrared spectrophotometer.

The exposure time (T_(0.1)) corresponding to the formation of a carbonyl absorbance of 0.1 is a measure for the efficiency of the light stabilizer system. The values obtained are summarized in the following tables. High T_(0.1) values are desired.

TABLE 2A T_(0.1) in hours T_(0.1) in hours Light stabilizer T_(0.1) in hours Light stabilizer system in Light stabilizer system in combination system in combination with TINUVIN combination with TINUVIN 622 (RTM) with TINUVIN 622 (RTM) The amount of 622 (RTM) The amount of the stabilizers The amount of the stabilizers of the light the stabilizers of the light stabilizer of the light T_(0.1) in hours stabilizer system is stabilizer The amount of system is 0.05% 0.075% each system is 0.09% the light each and the and the each and stabilizers amount of amount of the amount of used is 0.1% TINUVIN 622 TINUVIN 622 TINUVIN 622 Light stabilizer system each*). (RTM) is 0.10%*). (RTM) is 0.05%*). (RTM) is 0.02%*).* Without 300 TINUVIN 770 (RTM) + 4635 7530 7585 6235 TINUVIN 144 (RTM) TINUVIN 770 (RTM) + 4935 7940 7170 7130 TINUVIN 123 (RTM) TINUVIN 770 (RTM) + 5105 7455 7030 6890 HOSTAVIN N 24 (RTM) TINUVIN 770 (RTM) + 6710 6945 7865 8010 ADK STAB LA 52 (RTM) TINUVIN 770 (RTM) + 5450 7225 7225 7280 ADK STAB LA 57 (RTM) TINUVIN 770 (RTM) + 5915 6700 7190 7025 ADK STAB LA 67 (RTM) TINUVIN 770 (RTM) + 6925 >8340 >8340 7360 GOODRITE UV 3034 (RTM) TINUVIN 770 (RTM) + 6325 7965 7625 7025 GOODRITE UV 3150 (RTM) TINUVIN 770 (RTM) + 6040 7400 7540 7025 Compound (B-1-a-1) TINUVIN 770 (RTM) + 5070 7005 6990 5735 SANDUVOR 3050 (RTM) TINUVIN 770 (RTM) + 5745 7470 6765 6705 SANDUVOR PR-31 (RTM) *)The overall concentration of the light stabilizers is 0.20%.

TABLE 2B T_(0.1) in hours Light stabilizer system in combination with Mixture (A-2) T_(0.1) in hours The amount of the stabilizers of The amount the light stabilizer system is of the light stabilizers 0.075% each and the amount Light stabilizer system used is 0.1% each*). of Mixture (A-2) is 0.05%*). Without 300 — TINUVIN 770 (RTM) + 4635 6025 TINUVIN 144 (RTM) TINUVIN 770 (RTM) + 4935 6080 TINUVIN 123 (RTM) TINUVIN 770 (RTM) + 5105 6005 HOSTAVIN N 24 (RTM) TINUVIN 770 (RTM) + 5450 6800 ADK STAB LA 57 (RTM) TINUVIN 770 (RTM) + 6925 7735 GOODRITE UV 3034 (RTM) TINUVIN 770 (RTM) + 6530 7335 Compound (B-6-a-2) TINUVIN 770 (RTM) + 6040 6905 Compound (B-1-a-1) TINUVIN 770 (RTM) + 5070 >6495 SANDUVOR 3050 (RTM) *)The overall concentration of the light stabilizers is 0.20%.

TABLE 2C T_(0.1) in hours Light stabilizer system in combination with TINUVIN 622 (RTM) T_(0.1) in hours The amount of the stabilizers of the The amount of the light stabilizer system is 0.075% each light stabilizers used and the amount of TINUVIN 622 Light stabilizer system is 0.1% each*). (RTM) is 0.05%*). Without 315 — TINUVIN 770 (RTM) + 4815 >7260 TINUVIN 765 (RTM) TINUVIN 770 (RTM) + 5695 7145 TINUVIN 144 (RTM) TINUVIN 770 (RTM) + 4670 7080 TINUVIN 123 (RTM) TINUVIN 770 (RTM) + 5390 6710 HOSTAVIN N 24 (RTM) TINUVIN 770 (RTM) + 6655 >7260 ADK STAB LA 52 (RTM) TINUVIN 770 (RTM) + 5040 6760 ADK STAB LA 62 (RTM) TINUVIN 770 (RTM) + 5010 6205 ADK STAB LA 67 (RTM) TINUVIN 770 (RTM) + 5825 >7260 Compound (B-10-a-1) TINUVIN 770 (RTM) + 6125 7215 Compound (B-1-a-1) TINUVIN 770 (RTM) + 5690 >7260 SANDUVOR 3050 (RTM) TINUVIN 770 (RTM) + 5100 6475 SANDUVOR PR-31 (RTM) *)The overall concentration of the light stabilizers is 0.20%.

TABLE 2D T_(0.1) in hours Light stabilizer system in combination with TINUVIN 622 (RTM) T_(0.1) in hours The amount of the stabilizers of the The amount of the light stabilizer system is 0.075% each light stabilizers used and the amount of TINUVIN 622 Light stabilizer system is 0.1% each*). (RTM) is 0.05%*). Without 315 — TINUVIN 765 (RTM) + 4930 7180 TINUVIN 144 (RTM) TINUVIN 765 (RTM) + 4640 >7260 TINUVIN 123 (RTM) TINUVIN 765 (RTM) + 6580 >7260 HOSTAVIN N 20 (RTM) TINUVIN 765 (RTM) + 5325 7040 HOSTAVIN N 24 (RTM) TINUVIN 765 (RTM) + 5605 >7260 ADK STAB LA 52 (RTM) TINUVIN 765 (RTM) + 5360 6905 ADK STAB LA 57 (RTM) TINUVIN 765 (RTM) + 4620 >7260 ADK STAB LA 62 (RTM) TINUVIN 765 (RTM) + 4840 6625 ADK STAB LA 67 (RTM) TINUVIN 765 (RTM) + 6550 >7260 GOODRITE UV 3034 (RTM) TINUVIN 765 (RTM) + 5715 >7260 GOODRITE UV 3150 (RTM) TINUVIN 765 (RTM) + 5105 >7260 Compound (B-6-a-1) TINUVIN 765 (RTM) + 6145 >7260 Compound (B-1-a-1) TINUVIN 765 (RTM) + 5425 >7260 SANDUVOR 3050 (RTM) TINUVIN 765 (RTM) + 4920 6675 SANDUVOR PR-31 (RTM) *)The overall concentration of the light stabilizers is 0.20%.

TABLE 2E T_(0.1) in hours Light stabilizer system in combination with TINUVIN 622 (RTM) T_(0.1) in hours The amount of the stabilizers of the The amount of the light stabilizer system is 0.075% light stabilizers used each and the amount of TINUVIN 622 Light stabilizer system is 0.1% each*). (RTM) is 0.05%*). Without 330 TINUVIN 144 (RTM) + 3185 5765 TINUVIN 123 (RTM) TINUVIN 144 (RTM) + 4295 6150 HOSTAVIN N 20 (RTM) TINUVIN 144 (RTM) + 3725 5720 HOSTAVIN N 24 (RTM) TINUVIN 144 (RTM) + 4195 5635 ADK STAB LA 52 (RTM) TINUVIN 144 (RTM) + 4870 6350 ADK STAB LA 57 (RTM) TINUVIN 144 (RTM) + 2815 5695 ADK STAB LA 62 (RTM) TINUVIN 144 (RTM) + 3910 4940 ADK STAB LA 67 (RTM) TINUVIN 144 (RTM) + 4185 6115 GOODRITE UV 3034 (RTM) TINUVIN 144 (RTM) + 4290 5725 GOODRITE UV 3150 (RTM) TINUVIN 144 (RTM) + 5515 6565 Compound (B-6-a-1) TINUVIN 144 (RTM) + 5100 6810 Compound (B-6-a-2) TINUVIN 144 (RTM) + 5380 6585 Compound (B-10-a-1) TINUVIN 144 (RTM) + 5470 6305 Compound (B-1-a-1) TINUVIN 144 (RTM) + 4030 5200 SANDUVOR 3050 (RTM) TINUVIN 144 (RTM) + 3105 5890 SANDUVOR PR-31 (RTM) *)The overall concentration of the light stabilizers is 0.20%.

TABLE 2F T_(0.1) in hours Light stabilizer system in combination with TINUVIN 622 (RTM) T_(0.1) in hours The amount of the stabilizers of the The amount of the light stabilizer system is 0.075% each light stabilizers used and the amount of TINUVIN 622 Light stabilizer system is 0.1% each*). (RTM) is 0.05%*). Without 330 TINUVIN 123 (RTM) + 4455 5715 HOSTAVIN N 20 (RTM) TINUVIN 123 (RTM) + 3490 5265 HOSTAVIN N 24 (RTM) TINUVIN 123 (RTM) + 4620 5610 ADK STAB LA 52 (RTM) TINUVIN 123 (RTM) + 4275 5670 ADK STAB LA 57 (RTM) TINUVIN 123 (RTM) + 3380 5185 ADK STAB LA 62 (RTM) TINUVIN 123 (RTM) + 3470 5355 ADK STAB LA 67 (RTM) TINUVIN 123 (RTM) + 4520 >6280 GOODRITE UV 3034 (RTM) TINUVIN 123 (RTM) + 4260 5635 GOODRITE UV 3150 (RTM) TINUVIN 123 (RTM) + 4760 6145 Compound (B-6-a-1) TINUVIN 123 (RTM) + 5115 6365 Compound (B-6-a-2) TINUVIN 123 (RTM) + 5785 6700 Compound (B-10-a-1) TINUVIN 123 (RTM) + 4345 6115 Compound (B-1-a-1) TINUVIN 123 (RTM) + 3650 5040 SANDUVOR 3050 (RTM) TINUVIN 123 (RTM) + 3655 5390 SANDUVOR PR-31 (RTM) TINUVIN 123 (RTM) + 4305 5205 Compound (B-7-1) *)The overall concentration of the light stabilizers is 0.20%.

TABLE 2G T_(0.1) in hours Light stabilizer system in combination with TINUVIN 622 (RTM) T_(0.1) in hours The amount of the stabilizers of the The amount of the light stabilizer system is 0.075% each light stabilizers used and the amount of TINUVIN 622 Light stabilizer system is 0.1% each*). (RTM) is 0.05%*). Without 325 HOSTAVIN N 20 (RTM) + 3695 4565 HOSTAVIN N 24 (RTM) HOSTAVIN N 20 (RTM) + 4375 5525 ADK STAB LA 52 (RTM) HOSTAVIN N 20 (RTM) + 4485 5535 ADK STAB LA 57 (RTM) HOSTAVIN N 20 (RTM) + 3810 5315 ADK STAB LA 62 (RTM) HOSTAVIN N 20 (RTM) + 3655 5045 ADK STAB LA 67 (RTM) HOSTAVIN N 20 (RTM) + 5005 5610 GOODRITE UV 3034 (RTM) HOSTAVIN N 20 (RTM) + 3950 5050 GOODRITE UV 3150 (RTM) HOSTAVIN N 20 (RTM) + 5025 >5890 Compound (B-6-a-1) HOSTAVIN N 20 (RTM) + 5465 >5890 Compound (B-6-a-2) HOSTAVIN N 20 (RTM) + 5405 >5890 Compound (B-10-a-1) HOSTAVIN N 20 (RTM) + 5410 >5890 Compound (B-1-a-1) HOSTAVIN N 20 (RTM) + 3985 5090 SANDUVOR 3050 (RTM) HOSTAVIN N 20 (RTM) + 4085 5255 SANDUVOR PR-31 (RTM) HOSTAVIN N 20 (RTM) + 4200 5220 Compound (B-7-1) *)The overall concentration of the light stabilizers is 0.20%.

TABLE 2H T_(0.1) in hours Light stabilizer system in combination with TINUVIN 622 (RTM) T_(0.1) in hours The amount of the stabilizers of the The amount of the light stabilizer system is 0.075% each light stabilizers used and the amount of TINUVIN 622 Light stabilizer system is 0.1% each*). (RTM) is 0.05%*). Without 325 ADK STAB LA 57 (RTM) + 4035 5020 HOSTAVIN N 24 (RTM) ADK STAB LA 57 (RTM) + 3855 4985 ADK STAB LA 52 (RTM) ADK STAB LA 57 (RTM) + 4320 4890 GOODRITE UV 3150 (RTM) ADK STAB LA 57 (RTM) + 3970 4430 SANDUVOR PR-31 (RTM) ADK STAB LA 57 (RTM) + 3765 4475 Compound (B-7-1) *)The overall concentration of the light stabilizers is 0.20%. 

1. A stabilizer mixture containing the components (A) and (B) wherein component (A) is a compound of the formula (A-1)

wherein A₁ is hydrogen or C₁-C₄alkyl, A₂ is a direct bond or C₁-C₁₀alkylene, and n₁ is a number from 2 to 50; at least one compound of the formulae (A-2-a) and (A-2-b)

wherein n₂ and n₂* are a number from 2 to 50; a compound of the formula (A-3)

wherein A₃ and A₄ independently of one another are hydrogen or C₁-C₈alkyl, or A₃ and A₄ together form a C₂-C₁₄alkylene group, and the variables n₃ independently of one another are a number from 1 to 50; or a compound of the formula (A-4)

wherein n₄ is a number from 2 to 50, A₅ is hydrogen or C₁-C₄alkyl, the radicals A₆ and A₇ independently of one another are C₁-C₄alkyl or a group of the formula (a-I)

wherein A₈ is hydrogen, C₁-C₈alkyl, O., —OH, —CH₂CN, C₁-C₁₈alkoxy, C₅-C₁₂cycloalkoxy, C₃-C₆alkenyl, C₇-C₉phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C₁-C₄alkyl; or C₁-C₈acyl, with the proviso that at least 50% of the radicals A₇ are a group of the formula (a-I); and component (B) is formed by two different low molecular weight sterically hindered amine compounds containing a group of the formula (I) or (II);

with the proviso that components (A) and (B) are different.
 2. A stabilizer mixture according to claim 1 wherein the two different compounds of component (B) are selected from the group consisting of the classes β-1) a compound of the formula (B-1)

in which E₁ is hydrogen, C₁-C₈alkyl, O., —OH, —CH₂CN, C₁-C₁₈alkoxy, C₅-C₁₂cycloalkoxy, C₃-C₆alkenyl, C₇-C₉phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C₁-C₄alkyl; or C₁-C₈acyl, m₁ is 1, 2 or 4, if m₁ is 1, E₂ is C₁-C₂₅alkyl, if m₁ is 2, E₂ is C₁-C₁₄alkylene or a group of the formula (b-I)

wherein E₃ is C₁-C₁₀alkyl or C₂-C₁₀alkenyl, E₄ is C₁-C₁₀alkylene, and E₅ and E₆ independently of one another are C₁-C₄alkyl, cyclohexyl or methylcyclohexyl, and if m₁ is 4, E₂ is C₄-C₁₀alkanetetrayl; β-2) a compound of the formula (B-2)

in which two of the radicals E₇ are —COO—(C₁-C₂₀alkyl), and two of the radicals E₇ are a group of the formula (b-II)

with E₈ having one of the meanings of E₁; β-3) a compound of the formula (B-3)

in which E₉ and E₁₀ together form C₂-C₁₄alkylene, E₁₁ is hydrogen or a group -Z₁-COO-Z₂, Z₁ is C₂-C₁₄alkylene, and Z₂ is C₁-C₂₄alkyl, and E₁₂ has one of the meanings of E₁; β-4) a compound of the formula (B-4)

wherein the radicals E₁₃ independently of one another have one of the meanings of E₁, the radicals E₁₄ independently of one another are hydrogen or C₁-C₁₂alkyl, and E₁₅ is C₁-C₁₀alkylene or C₃-C₁₀alkylidene; β-5) a compound of the formula (B-5)

wherein the radicals E₁₆ independently of one another have one of the meanings of E₁; β-6) a compound of the formula (B-6)

in which E₁₇ is C₁-C₂₄alkyl, and E₁₈ has one of the meanings of E₁; β-7) a compound of the formula (B-7)

in which E₁₉, E₂₀ and E₂₁ independently of one another are a group of the formula (b-III)

wherein E₂₂ has one of the meanings of E₁; β-8) a compound of the formula (B-8)

wherein the radicals E₂₃ independently of one another have one of the meanings of E₁, and E₂₄ is hydrogen, C₁-C₁₂alkyl or C₁-C₁₂alkoxy; β-9) a compound of the formula (B-9)

wherein m₂ is 1, 2 or 3, E₂₅ has one of the meanings of E₁, and when m₂ is 1, E₂₆ is a group

when m₂ is 2, E₂₆ is C₂-C₂₂alkylene, and when m₂ is 3, E₂₆ is a group of the formula (b-IV)

wherein the radicals E₂₇ independently of one another are C₂-C₁₂alkylene, and the radicals E₂₈ independently of one another are C₁-C₁₂alkyl or C₅-C₁₂cycloalkyl; β-10) a compound of the formula (B-10)

wherein the radicals E₂₉ independently of one another have one of the meanings of E₁, and E₃₀ is C₂-C₂₂alkylene, C₅-C₇cycloalkylene, C₁-C₄alkylenedi(C₅-C₇cycloalkylene), phenylene or phenylenedi(C₁-C₄alkylene); or β-11) a compound of the formula (B-11)

in which E₃₁ is C₁-C₁₀alkyl, C₅-C₁₂cycloalkyl, C₁-C₄alkyl-substituted C₅-C₁₂cycloalkyl, phenyl or C₁-C₁₀alkyl-substituted phenyl, E₃₂ is C₃-C₁₀alkylene, E₃₃ has one of the meanings of E₁, and m₃ is a number from 2 to
 6. 3. A stabilizer mixture according to claim 1 wherein A₁ is hydrogen or methyl, A₂ is a direct bond or C₂-C₆alkylene, and n₁ is a number from 2 to 25; n₂ and n₂* are a number from 2 to 25; A₃ and A₄ independently of one another are hydrogen or C₁-C₄alkyl, or A₃ and A₄ together form a C₉-C₁₃alkylene group, and the variables n₃ independently of one another are a number from 1 to 25; n₄ is a number from 2 to 25, A₅ and A₆ independently of one another are C₁-C₄alkyl, and A₇ is C₁-C₄alkyl or a group of the formula (a-I) with the proviso that at least 50% of the radicals A₇ are a group of the formula (a-I).
 4. A stabilizer mixture according to claim 2 wherein m₁ is 1, 2 or 4, if m₁ is 1, E₂ is C₁₂-C₂₀alkyl, if m₁ is 2, E₂ is C₂-C₁₀alkylene or a group of the formula (b-I) E₃ is C₁-C₄alkyl, E₄ is C₁-C₆alkylene, and E₅ and E₆ independently of one another are C₁-C₄alkyl, and if m₁ is 4, E₂ is C₄-C₈alkanetetrayl; two of the radicals E₇ are —COO—(C₁₀-C₁₅alkyl), and two of the radicals E₇ are a group of the formula (b-II); E₉ and E₁₀ together form C₉-C₁₃alkylene, E₁₁ is hydrogen or a group -Z₁-COO-Z₂, Z₁ is C₂-C₆alkylene, and Z₂ is C₁₀-C₁₆alkyl; E₁₄ is hydrogen, and E₁₅ is C₂-C₆alkylene or C₃-C₅alkylidene; E₁₇ is C₁₀-C₁₄alkyl; E₂₄ is C₁-C₄alkoxy; m₂ is 1, 2 or 3, when m₂ is 1, E₂₆ is a group

when m₂ is 2, E₂₆ is C₂-C₆alkylene, and when m₂ is 3, E₂₆ is a group of the formula (b-IV) the radicals E₂₇ independently of one another are C₂-C₆alkylene, and the radicals E₂₈ independently of one another are C₁-C₄alkyl or C₅-C₈cycloalkyl; E₃₀ is C₂-C₈alkylene; and E₃₁ is C₁-C₄alkyl, E₃₂ is C₃-C₆alkylene, and m₃ is a number from 2 to
 6. 5. A stabilizer mixture according to claim 1 wherein component (A) is a compound of the formula (A-1-a), (A-2-a), (A-2-b), (A-3-a) or (A-4-a);

wherein n₁ is a number from 2 to 20;

wherein n₂ and n₂* are a number from 2 to 20;

wherein the variables n₃ independently of one another are a number from 1 to 20;

wherein n₄ is a number from 2 to 20, and at least 50% of the radicals A₇ are a group of the formula (a-I)

wherein A₈ is hydrogen, C₁-C₈alkyl, O., —OH, —CH₂CN, C₁-C₁₈alkoxy, C₅-C₁₂cycloalkoxy, C₃-C₆alkenyl, C₇-C₉phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C₁-C₄alkyl; or C₁-C₈acyl, and the remaining radicals A₇ are ethyl; and component (B) is formed by two different compounds selected from the group consisting of compounds of the formulae (B-1-a), (B-1-b), (B-1-c), (B-1-d), (B-2-a), (B-3-a), (B-3-b), (B-4-a), (B-4-b), (B-5), (B-6-a), (B-7), (B-8-a), (B-9-a), (B-9-b), (B-9-c), (B-10-a) and (B-11-a);

wherein E₁ is hydrogen, C₁-C₈alkyl, O., —OH, —CH₂CN, C₁-C₁₈alkoxy, C₅-C₁₂cycloalkoxy, C₃-C₆alkenyl, C₇-C₉phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C₁-C₄alkyl; or C₁-C₈acyl;

in which two of the radicals E₇ are —COO—C₁₃H₂₇ and two of the radicals E₇ are

and E₈ has one of the meanings of E₁;

wherein E₁₂ has one of the meanings of E₁;

wherein E₁₃ has one of the meanings of E₁;

wherein E₁₆ has one of the meanings of E₁;

wherein E₁₈ has one of the meanings of E₁;

in which E₁₉, E₂₀ and E₂₁ independently of one another are a group of the formula (b-III)

wherein E₂₂ has one of the meanings of E₁;

wherein E₂₃ has one of the meanings of E₁;

wherein E₂₅ has one of the meanings of E₁;

wherein E₂₉ has one of the meanings of E₁;

wherein m₃ is a number from 2 to 6 and E₃₃ has one of the meanings of E₁.
 6. A stabilizer mixture according to claim 1 wherein A₈ is hydrogen, C₁-C₄alkyl, C₁-C₁₀alkoxy, cyclohexyloxy, allyl, benzyl or acetyl.
 7. A stabilizer mixture according to claim 2 wherein E₁, E₈, E₁₂, E₁₃, E₁₆, E₁₈, E₂₂, E₂₃, E₂₅, E₂₉ and E₃₃ are hydrogen, C₁-C₄alkyl, C₁-C₁₀alkoxy, cyclohexyloxy, allyl, benzyl or acetyl.
 8. A stabilizer mixture according to claim 5 wherein A₈, E₁, E₈, E₁₂, E₁₃, E₁₆, E₁₈, E₂₂, E₂₃, E₂₅, E₂₉ and E₃₃ are hydrogen or methyl and E₁ additionally is C₁-C₈alkoxy.
 9. A stabilizer mixture according to claim 5 wherein one of the two different compounds forming component (B) is a compound of the formula (B-1-b) with E₁ being hydrogen.
 10. A stabilizer mixture according to claim 5 wherein component (A) is a compound of the formula (A-1-a) with n₁ being a number from 2 to 20 or a compound of the formula (A-2-a) or (A-2-b) wherein n₂ and n₂* are a number from 2 to 20; and one of the two different compounds forming component (B) is a compound of the formula (B-1-b) with E₁ being hydrogen.
 11. A stabilizer mixture according to claim 5 wherein component (A) is a compound of the formula (A-1-a) with n₁ being a number from 2 to 20 or a compound of the formula (A-2-a) or (A-2-b) wherein n₂ and n₂* are a number from 2 to 20; one of the two different compounds forming component (B) is a compound of the formula (B-1-b) with E₁ being hydrogen; and the other of the two different compounds forming component (B) is a compound of the formula (B-1-a) with E₁ being hydrogen, (B-1-b) with E₁ being methyl, (B-1-d) with E₁ being hydrogen or methyl, (B-3-a) with E₁₂ being hydrogen, (B-3-b) with E₁₂ being hydrogen, (B-4-b) with E₁₃ being hydrogen, (B-5) with E₁₆ being hydrogen, (B-6-a) with E₁₈ being hydrogen or methyl, (B-8-a) with E₂₃ being methyl, (B-9-c) with E₂₅ being hydrogen or methyl, (B-10-a) with E₂₉ being hydrogen, or (B-11-a) with E₃₃ being hydrogen.
 12. A stabilizer mixture according to claim 5 wherein component (A) is a compound of the formula (A-1-a) with n₁ being a number from 2 to 20, component (B) is a compound of the formula (B-1-b) wherein E₁ is hydrogen, and component (C) is a compound of the formula (B-1-b) wherein E₁ is octyloxy; or component (A) is a compound of the formula (A-1-a) with n₁ being a number from 2 to 20, component (B) is a compound of the formula (B-1-b) wherein E₁ is hydrogen, and component (C) is a compound of the formula (B-3-a) wherein E₁₂ is hydrogen; or component (A) is a compound of the formula (A-1-a) with n₁ being a number from 2 to 20, component (B) is a compound of the formula (B-1-b) wherein E₁ is hydrogen, and component (C) is a compound of the formula (B-1-d) wherein E₁ is hydrogen; or component (A) is a compound of the formula (A-1-a) with n₁ being a number from 2 to 20, component (B) is a compound of the formula (B-1-b) wherein E₁ is hydrogen, and component (C) is a compound of the formula (B-1-a) wherein E₁ is hydrogen; or component (A) is a compound of the formula (A-1-a) with n₁ being a number from 2 to 20, component (B) is a compound of the formula (B-1-b) wherein E₁ is methyl, and component (C) is a compound of the formula (B-1-d) wherein E₁ is methyl.
 13. A composition comprising an organic material subject to degradation induced by light, heat or oxidation and a stabilizer mixture according to claim
 1. 14. A composition according to claim 13 wherein the organic material is a synthetic polymer.
 15. A composition according to claim 13 wherein the organic material is a polyolefin.
 16. A composition according to claim 13 wherein the organic material is polyethylene, polypropylene, a polyethylene copolymer or a polypropylene copolymer.
 17. A method for stabilizing an organic material against degradation induced by light, heat or oxidation, which comprises incorporating into the organic material a stabilizer mixture according to claim
 1. 